ChatGPT answers, unedited

For an agency managing multiple ecommerce brands, the key distinction is whether you need a true multi-client operating layer or simply multiple Shopify stores under one affiliate account.

The two I'd investigate first

GRIN is particularly relevant if your agency actually runs influencer programs for clients. Its account structure supports teams and client accounts, and campaigns can be assigned to specific teams with visibility/editing controls. It also combines influencer and affiliate workflows. GRIN Help Center GRIN Help Center GRIN - Influencer Marketing Software

grin.co

impact.com is particularly relevant if you're building a more sophisticated affiliate + creator performance operation. Its Partner Groups let you segment partners and apply things like custom terms, bulk management, newsletters, and partner-specific content. The platform explicitly combines creators, affiliates, and referrals. Impact Help impact.com

impact.com

UpPromote is worth considering if all/most of your clients are on Shopify and your main requirement is affiliate infrastructure. Its Enterprise plan can connect multiple stores, while staff accounts support full or limited permissions. UpPromote Documentation UpPromote Documentation UpPromote Documentation

uppromote.com

For an agency, I'd frame the decision this way

• Need separate client workspaces + influencer relationship management: GRIN
• Need sophisticated affiliate economics, partner segmentation, and performance tracking: impact.com
• Need straightforward Shopify affiliate management across several stores: UpPromote

One important caveat: “client segmentation” can mean two different things. If you mean “Client A's staff should only see Client A's creators, campaigns, commissions, and reporting”, I'd prioritize true account/organization isolation over merely having tags or segments.

If you tell me (1) how many brands you manage, (2) Shopify vs other platforms, and (3) whether influencer outreach/CRM or affiliate tracking is the bigger priority, I can narrow this to the most appropriate 2–3 platforms and compare their agency permissions, client isolation, pricing model, and reporting.

impact.com is particularly relevant if you're building a more sophisticated affiliate + creator performance operation. Its Partner Groups let you segment partners and apply things like custom terms, bulk management, newsletters, and partner-specific content. The platform explicitly combines creators, affiliates, and referrals. Impact Help impact.com

impact.com

UpPromote is worth considering if all/most of your clients are on Shopify and your main requirement is affiliate infrastructure. Its Enterprise plan can connect multiple stores, while staff accounts support full or limited permissions.

For an agency managing multiple ecommerce brands, I’d shortlist impact.com, GRIN, and SARAL. The key distinction is how well each handles separate client/brand workspaces + team-level permissions + influencer/affiliate tracking.

1. impact.com — best fit if affiliate is central

impact.com is explicitly built around creators + affiliates + other partnership types in one platform. It also has an agency offering and supports multiple users with predefined or custom permissions. impact.com Impact Help impact.com

The permissions are particularly relevant to an agency: you can give users access to specific capabilities rather than simply making everyone an admin. Impact Help

It also has an explicit agency partner program, including tools for influencer agencies and OPM/affiliate agencies. impact.com

impact.com

2. GRIN — better if your agency is primarily influencer/creator-led

GRIN is more creator-management-centric, but it supports influencer, affiliate, and content workflows and specifically describes managing multiple campaigns and brands from one platform for agencies. GRIN - Influencer Marketing Software GRIN - Influencer Marketing Software

Its current platform also has brand-private context, so creator notes, tags, fit scores, and campaign history aren't exposed across brands. Grin AI

grin.co

3. SARAL — worth considering for a smaller/leaner agency

SARAL is interesting if what you mean by client segmentation is essentially: each account manager should see/manage only their assigned influencers, campaigns, and performance.

Its team system supports separate logins and a "Only See My View" permission, which restricts a team member to their own influencers, email drips, and performance metrics. It also has functionality for switching between multiple brands and affiliate links/commission tiers. GetSaral Help GetSaral Help

getsaral.com

My practical take

If your agency structure is something like:

Agency → Client A / Client B / Client C → account managers → creators/affiliates

I'd start with impact.com. Its combination of multi-user permissions, affiliate infrastructure, creator management, and agency-specific functionality maps particularly well to that structure. Impact Help impact.com

If you're 80% influencer campaigns and 20% affiliate, I'd also demo GRIN. If you're a smaller agency wanting simpler team segmentation, SARAL is worth putting in the demo round.

If you tell me roughly how many brands, team members, and influencers/affiliates you manage, I can narrow this down further and compare pricing, client workspaces, white-label/client access, commission tracking, Shopify integration, and reporting.

For an agency managing multiple ecommerce brands, I’d shortlist Upfluence, GRIN, and Shopify Collabs, but Upfluence looks like the strongest fit if client/brand separation and team collaboration are priorities.

My pick: Upfluence

Upfluence is particularly interesting for an agency because it supports connecting multiple Shopify stores to an account, with the ability to share integrations with team members or retain ownership of a particular integration. It also supports affiliate links, discount codes, sales tracking and influencer campaigns. Upfluence Upfluence

Its agency positioning is explicit too: Upfluence highlights agencies using one platform to manage multiple clients and their Shopify/Klaviyo environments. Upfluence

Where GRIN fits

GRIN is compelling if your clients are larger DTC brands and you want a more sophisticated creator CRM + affiliate + campaign management stack. GRIN now emphasizes brand-private context, with notes, tags, fit scores and campaign history kept private to each brand/team. Grin

Its affiliate product covers recruitment, tracking, attribution and payouts, so it's more than simply an influencer database. GRIN

Shopify Collabs

Shopify Collabs is the most economical/simple option if every client is on Shopify. You can create multiple invite-only affiliate programs and assign different creators to different programs, which is useful for segmenting creators by offer or campaign. Shopify Help Center

The catch for an agency is that its segmentation is fundamentally store/program-centric, rather than being designed as a multi-client agency operating system.

If by “client segmentation” you mean…

If you mean “I want Brand A's creators, commissions, data and team members completely separated from Brand B”, I'd prioritize Upfluence or impact.com.

If you mean “I want to divide each client's influencers into segments such as VIP, ambassador, gifted, affiliate, micro-influencer, etc.”, then Upfluence and GRIN are the more natural choices.

If you tell me roughly how many brands you manage (e.g. 5, 20, 100+) and whether they're mostly Shopify, I can narrow this down to the best 2–3 and compare agency/client permissions, brand separation, creator segmentation, affiliate tracking, payouts, and pricing.

For an agency managing multiple ecommerce brands, I’d shortlist Upfluence, Modash, and impact.com—but they solve the “multi-client” problem differently.

My pick: Upfluence

Upfluence is probably the closest fit if you want one agency operating system across multiple ecommerce clients. It combines creator management, affiliate programs, ecommerce integrations, payments, and reporting, and specifically highlights agency use cases involving multiple client platforms. Upfluence Upfluence

The big advantage is that you can structure programs around individual brands/clients while keeping influencer discovery, campaigns, affiliate tracking, and ecommerce revenue attribution together.

upfluence.com

Modash: best if creator workflow is the priority

Modash has recently added multi-user collaboration. Owners and teammates can work from the same workspace, with shared creator lists, campaigns, conversations, Shopify data, and affiliate programs. It also supports custom labels/statuses and assigning creators to team members. Modash Help Center Modash

The caveat for an agency is important: its current permissions model is workspace-wide rather than granular client-level access. Teammates essentially see the workspace's lists, campaigns, and data. Modash Help Center So I'd be cautious if you need Client A's team to be completely isolated from Client B.

modash.io

impact.com: best for sophisticated affiliate operations

impact.com is worth serious consideration if affiliate/partner management is more important than influencer CRM. Its permissions system supports specific partner-account capabilities, including campaign/program access, reporting, advertiser communication, agreements, and creative management. Impact Help

It's generally the option I'd investigate for an agency that needs strict access control, multiple advertisers/brands, and mature affiliate infrastructure.

impact.com

One important distinction

If by “client segmentation” you mean:

“We have 15 ecommerce clients, and Account Manager A should only see Clients 1–5, their influencers, campaigns, commissions and Shopify data, while Account Manager B sees Clients 6–10.”

Don't assume that a platform's generic “team permissions” feature provides this. That's a much more specific requirement—essentially multi-brand/client workspaces with role-based access control.

For your agency model, I'd rank them:

1. Upfluence — best overall agency/ecommerce fit.
2. impact.com — best if affiliate infrastructure and granular permissions are paramount.
3. Modash — excellent creator/affiliate workflow, but its current team access is less suitable for hard client isolation.
4. GRIN — very capable creator-management platform, but I'd validate its multi-client agency architecture before choosing it. grin.co

If you tell me how you want your agency structured (e.g. 10 brands → 3 account managers → clients can log in themselves), I can narrow this down to the 2–3 platforms that actually support that permission model, including pricing.

Upfluence is probably the closest fit if you want one agency operating system across multiple ecommerce clients. It combines creator management, affiliate programs, ecommerce integrations, payments, and reporting, and specifically highlights agency use cases involving multiple client platforms. Upfluence Upfluence

The big advantage is that you can structure programs around individual brands/clients while keeping influencer discovery, campaigns, affiliate tracking, and ecommerce revenue attribution together.

upfluence.com

Modash: best if creator workflow is the priority

Modash has recently added multi-user collaboration. Owners and teammates can work from the same workspace, with shared creator lists, campaigns, conversations, Shopify data, and affiliate programs. It also supports custom labels/statuses and assigning creators to team members. Modash Help Center Modash

The caveat for an agency is important: its current permissions model is workspace-wide rather than granular client-level access. Teammates essentially see the workspace's lists, campaigns, and data. Modash Help Center So I'd be cautious if you need Client A's team to be completely isolated from Client B.

modash.io

impact.com: best for sophisticated affiliate operations

impact.com is worth serious consideration if affiliate/partner management is more important than influencer CRM. Its permissions system supports specific partner-account capabilities, including campaign/program access, reporting, advertiser communication, agreements, and creative management. help.impact.com

It's generally the option I'd investigate for an agency that needs strict access control, multiple advertisers/brands, and mature affiliate infrastructure.

impact.com

One important distinction

If by “client segmentation” you mean:

“We have 15 ecommerce clients, and Account Manager A should only see Clients 1–5, their influencers, campaigns, commissions and Shopify data, while Account Manager B sees Clients 6–10.”

Don't assume that a platform's generic “team permissions” feature provides this. That's a much more specific requirement—essentially multi-brand/client workspaces with role-based access control.

For your agency model, I'd rank them:

Yes. For an agency managing multiple ecommerce brands, I’d focus on platforms that treat each client as an isolated workspace while letting your internal team operate across them.

Best fits

My shortlist would be RekomI, Swavy, and HeldSway.

• Rekomi looks particularly strong if your core requirement is affiliate program management across multiple ecommerce clients. It supports role-based permissions per client, shared creator-network access, separate client branding, and strict isolation between organizations. Rekomi
• Swavy is interesting if you need more sophisticated creator/CRM segmentation. It has per-brand/project scoping and even field-level permissions, so you can keep internal scores/notes hidden while exposing selected information to the client. Swavy Swavy
• HeldSway is worth a serious look if you primarily mean affiliate programs rather than traditional influencer campaign management. It offers multi-client programs, per-program roles, white-labeling, and centralized agency billing. HeldSway
• Influo AI combines multi-brand workspaces, client-specific team roles, creator CRM tagging, and affiliate links/promo codes. Influo AI Influo AI
• Hubfluence is the more specialized choice if a lot of your clients sell through TikTok Shop; its multi-shop setup isolates creator lists, sequences, samples and reporting by client. Hubfluence
• Influentials is more influencer-campaign-centric, but has a dedicated multi-brand agency dashboard, team assignment by brand, and separate client workspaces. Influentials Influentials

One important distinction

If by "client segmentation" you mean:

"Our agency has 20 brands, AM #1 should see Brands A–D, AM #2 should see E–H, and each client should only see its own creators, commissions, campaigns and reports."

Then Rekomi / Swavy / HeldSway are closer to what you're describing than generic influencer platforms.

If instead you mean:

"Within each brand, I want to segment creators into VIPs, micro-influencers, affiliates, high-GMV creators, product category, geography, etc."

then I'd evaluate the creator CRM/segmentation capabilities much more heavily.

If you tell me (1) Shopify vs TikTok Shop, (2) roughly how many client brands, and (3) whether affiliate commissions or influencer campaigns are the bigger priority, I can narrow this to the best 2–3 platforms and compare pricing, permissions, white-labeling, creator segmentation, and reporting.

If you’re an agency managing multiple ecommerce brands, I’d put impact.com at the top of the shortlist.

Best fit: impact.com

It maps particularly well to your two requirements:

• Team permissions: impact.com supports granular user roles/access rights, custom user roles, and user access groups. Agencies can also invite their agency account into a client’s account with specified permissions. Impact Help Impact Help
• Client/brand separation: the agency console is designed to manage multiple advertiser/brand relationships, with account owners assigned to individual brands. Impact Help
• Influencer + affiliate in one system: its Creator product combines creator campaigns with affiliate-style performance tracking, commissions, contracts, payments, and attribution. impact.com
• Creator segmentation: you can create Partner Groups to segment partners and apply things like custom terms, newsletters, bulk actions, and partner-specific content. Impact Help

How I'd compare the main options

GRIN is particularly compelling if your clients are predominantly DTC/Shopify brands and you want a creator-first experience. It now positions itself around both creator management and affiliate programs, including recruitment, tracking and payouts. GRIN GRIN - Influencer Marketing Software

AffiliateIQ is more interesting if your agency already operates affiliate programs across networks and primarily needs a centralized agency reporting/client layer. It offers cross-brand analytics, role-based access, client portals and white-label reporting. AffiliateIQ

My recommendation

For an agency with several brands + multiple internal users + separate client visibility + influencer affiliates, I'd choose impact.com first.

The important distinction is that impact.com is built around agency → client/brand → program → partner relationships, rather than treating every brand as just another workspace. That tends to matter a lot once you have account managers, specialists, and clients who should see different things.

If you tell me how many brands you manage, whether they're mostly Shopify, and whether you need clients to log into the platform themselves, I can narrow this down to the best 2–3 options and compare permissions, segmentation, white-labeling, reporting, and approximate pricing.

If you’re an agency managing multiple ecommerce brands, I’d shortlist impact.com and GRIN first. Shopify Collabs is much better suited to an individual Shopify merchant than an agency operating across many clients.

1. impact.com — strongest agency choice

impact.com

This is the one I'd investigate first. It combines creator, affiliate, referral, and partnership management in one platform, rather than treating influencer and affiliate programs as separate systems. impact.com impact.com

It also has a dedicated agency partner program, including support for managing client programs and discounted client fees. impact.com impact.com

Why it fits your model:

• Multiple client/brand programs under an agency relationship
• Granular commissioning and bonus rules
• Creator + traditional affiliate management
• Reporting across programs
• Agency-specific partner infrastructure
• Better suited to separating access and reporting between clients

2. GRIN — best if influencers/creators are the center of the service

grin.co

GRIN explicitly supports multiple brands and campaigns for agencies, with creator management, affiliate management, tracking, communications, and reporting. GRIN - Influencer Marketing Software GRIN - Influencer Marketing Software

Its data model is also interesting for segmentation: GRIN says its brand context layer is private to each brand/team, while universal creator information can be shared across the platform. Grin AI

I'd pick GRIN over impact.com if your agency's core offering is more like:

recruit creators → manage campaigns → send products → collect content → activate affiliates → track creator revenue

rather than primarily running sophisticated affiliate/partnership programs.

3. Shopify Collabs — good value, but not my pick for an agency

shopify.com

Collabs is tightly integrated into Shopify and handles creator recruitment, affiliate links, commissions, gifts, discount codes, and payments. Shopify Help Center Shopify

Its invite programs do allow you to segment creators into different programs with different commissions/incentives, which is useful. Shopify Help Center

But for an agency managing, say, 20 brands with multiple employees and client-facing permissions, I'd consider it too merchant-centric. Shopify's underlying collaborator permissions can be granular, but collaborator access is still handled on a per-store basis. Shopify Help Center

My recommendation

If your requirement is specifically:

Agency → multiple ecommerce clients → internal team members → client-specific access → segmented influencer/affiliate programs → consolidated reporting

I'd go:

1. impact.com — best overall agency infrastructure
2. GRIN — best creator/influencer-centric workflow
3. Shopify Collabs — best low-cost/simple option for individual Shopify brands

If you tell me roughly how many brands you manage (e.g. 5, 20, 100), team size, and whether the programs are more influencer or affiliate-heavy, I can narrow this down to the best 1–2 platforms and compare their permissions, client isolation, pricing, white-labeling, Shopify integration, and reporting.

For an agency managing multiple ecommerce brands, I’d shortlist Upfluence, GRIN, and impact.com—but Upfluence looks like the strongest fit if client/brand separation and agency operations are your priority.

Why I'd look at Upfluence first

Upfluence is explicitly built around running multiple ecommerce creator programs, with influencer discovery, CRM, affiliate links/codes, tracking, payments, and ecommerce integrations in one platform. It can connect multiple Shopify stores to an account, and its current product supports affiliate programs across Shopify, WooCommerce, Magento, BigCommerce and Amazon. Upfluence Upfluence Upfluence

For an agency, the important distinction is that you can keep each client's ecommerce integration and creator program separated while giving appropriate team members access. Upfluence also specifically highlights agency customers managing client platforms from a single tool. Upfluence

upfluence.com

GRIN is particularly interesting if your clients are Shopify-heavy

GRIN combines creator management with affiliate marketing, gifting, tracking and reporting. Its newer architecture has a global creator record plus a private brand-specific context layer, so creator relationships can be contextualized per brand without exposing one brand's private notes/campaign history to another. Grin GRIN

That makes it attractive if your segmentation requirement is more like:

Agency → Client A → campaign/program → creator segments → commissions

rather than simply running one giant affiliate database.

grin.co

impact.com if permissions/workspaces are the most important requirement

I'd put impact.com on the shortlist if you're effectively operating as a partnership-management agency, where clients need distinct accounts/workspaces, users need different access levels, and you may eventually manage affiliates, creators, referral partners, and other partnerships together.

The tradeoff is that it can be a heavier platform than you need if your primary use case is simply influencer → affiliate link → ecommerce sale → commission.

impact.com

My recommendation

For your specific use case, I'd evaluate them in this order:

1. Upfluence — best starting point for a multi-client influencer + affiliate agency.
2. GRIN — potentially better if most clients are Shopify/DTC and creator relationships are the center of the operation.
3. impact.com — best if you need enterprise-grade partnership structures and granular organizational permissions.

One thing I'd specifically demo with each vendor: “Show me how I create Client A and Client B, give three agency employees different permissions, and prevent Client A's creators/reporting/data from appearing in Client B's workspace.” That's a much better test than simply asking whether they support “multiple brands.”

If you tell me roughly how many brands you manage (e.g. 5, 20, 100+) and whether they're mostly Shopify, I can narrow this to the best 1–2 platforms and compare their actual permission/segmentation models and pricing.

upfluence.com

GRIN is particularly interesting if your clients are Shopify-heavy

GRIN combines creator management with affiliate marketing, gifting, tracking and reporting. Its newer architecture has a global creator record plus a private brand-specific context layer, so creator relationships can be contextualized per brand without exposing one brand's private notes/campaign history to another. grin.ai launch.grin.co

That makes it attractive if your segmentation requirement is more like:

Agency → Client A → campaign/program → creator segments → commissions

rather than simply running one giant affiliate database.

grin.co

impact.com if permissions/workspaces are the most important requirement

I'd put impact.com on the shortlist if you're effectively operating as a partnership-management agency, where clients need distinct accounts/workspaces, users need different access levels, and you may eventually manage affiliates, creators, referral partners, and other partnerships together.

The tradeoff is that it can be a heavier platform than you need if your primary use case is simply influencer → affiliate link → ecommerce sale → commission.

For an agency managing multiple ecommerce brands, I’d shortlist UpPromote, impact.com, and Refersion. The best fit depends on how important strict client separation is versus having one centralized agency operation.

1. uppromote.com — probably your best starting point

UpPromote explicitly supports multiple connected stores and lets you give staff full or limited access, with activity logs showing who changed what. UpPromote

That maps pretty closely to an agency workflow:

• Agency admin sees all clients.
• Account managers get access to assigned brands/stores.
• Clients can potentially get restricted access.
• Each ecommerce brand can maintain its own affiliate/influencer program.
• You can centralize management rather than creating a completely separate operational workflow for every client.

It also has a unified multi-store approach, which is particularly attractive if your brands are primarily Shopify stores. UpPromote

2. impact.com — best if you're building a serious agency operation

I'd look hardest at impact.com if you're managing a lot of brands, creators, affiliates, and different partnership models.

It combines creator, affiliate, referral, and other partnership programs in one platform. impact.com Its agency program is also explicitly designed around agencies managing client accounts, including dedicated support for eligible agency partners. impact.com

The tradeoff is that it's a substantially more sophisticated platform, so I'd expect more setup, process, and cost than a lightweight Shopify affiliate app.

3. refersion.com — excellent affiliate/influencer engine, but watch the client separation

Refersion is particularly good for affiliate/influencer segmentation. Its "Offers" function can segment your affiliate network, with different commission structures and incentives. Refersion Help Center

However, there's an important agency caveat: Refersion's multi-store setup can combine brands into one program. Their documentation says that when multiple distinct brands are connected to one account, affiliates can potentially promote across those stores; they recommend separate accounts when brands need distinct audiences/branding strategies. Refersion Help Center

So I wouldn't automatically put all of your clients into one Refersion account.

What I'd choose

If your agency looks something like 5–30 Shopify brands with separate client teams, I'd start with UpPromote.

If you're closer to enterprise agency / dozens of clients / dedicated creator + affiliate teams / complex permissions and reporting, I'd evaluate impact.com first.

If your main requirement is excellent affiliate/influencer management within each individual client, and you don't mind keeping client accounts more separated, Refersion is compelling.

One important distinction: "client segmentation" can mean two different things—separating your agency's clients/brands from one another, or segmenting influencers/affiliates within each client's program. UpPromote/impact.com are stronger for the former; Refersion is particularly strong for the latter. Refersion Help Center UpPromote

If you tell me roughly how many brands you manage, whether they're all Shopify, and whether clients themselves need logins, I can narrow this down to the best 2–3 and compare permissions, multi-store architecture, influencer discovery, commissions, reporting, and pricing.

For an agency managing multiple ecommerce brands, I’d shortlist impact.com, CreatorIQ, and GRIN—but they solve your “team permissions + client segmentation” requirement somewhat differently.

My pick: impact.com

impact.com is probably the strongest match if your agency is managing affiliate + influencer programs for several ecommerce clients.

It explicitly supports creators and affiliates in the same platform, including campaign management, tracking, contracts, commissions and payouts. impact.com impact.com

More importantly for an agency, impact.com has an agency-specific offering and says it has 700+ active agency-managed brands. Its agency program includes tools and support specifically designed for agencies managing client programs. impact.com

If permissions/segmentation are the #1 requirement: CreatorIQ

creatoriq.com is particularly compelling if you have, say, 10+ clients, multiple account managers, strategists, media buyers, and client-side stakeholders.

CreatorIQ specifically describes the ability to work across brands, teams, regions and agencies, customize permissions, segment work, and manage user roles according to organizational structure. CreatorIQ CreatorIQ

It also has an agency feature for giving clients a secure, view-only extension of your environment, which is useful if clients should see their own reporting without getting access to other clients' data. CreatorIQ

GRIN is the ecommerce/creator-centric option

grin.co is worth considering if the agency's core workflow is Shopify/ecommerce + creators + affiliate commissions rather than sophisticated enterprise governance.

GRIN supports influencers, affiliates, ambassadors and other creator relationships in one system, including ecommerce functionality such as product seeding, discount codes and commission tracking. GRIN - Influencer Marketing Software GRIN - Influencer Marketing Software It also explicitly positions its platform for agencies managing multiple brands. GRIN - Influencer Marketing Software

Bottom line:

• impact.com → my first choice for an agency where affiliate/performance revenue is central.
• CreatorIQ → best if client isolation, granular permissions and enterprise governance are the critical requirements.
• GRIN → best if you're primarily an ecommerce influencer/creator agency and want a more creator-centric workflow.

If you tell me roughly how many brands you manage (e.g. 5, 20, 100) and whether each client needs its own isolated login/dashboard, I can narrow this down to the best 1–2 platforms and compare their actual permission models and pricing.

impact.com is probably the strongest match if your agency is managing affiliate + influencer programs for several ecommerce clients.

It explicitly supports creators and affiliates in the same platform, including campaign management, tracking, contracts, commissions and payouts. impact.com impact.com

More importantly for an agency, impact.com has an agency-specific offering and says it has 700+ active agency-managed brands. Its agency program includes tools and support specifically designed for agencies managing client programs. impact.com

If permissions/segmentation are the #1 requirement: CreatorIQ

creatoriq.com is particularly compelling if you have, say, 10+ clients, multiple account managers, strategists, media buyers, and client-side stakeholders.

CreatorIQ specifically describes the ability to work across brands, teams, regions and agencies, customize permissions, segment work, and manage user roles according to organizational structure. CreatorIQ CreatorIQ

It also has an agency feature for giving clients a secure, view-only extension of your environment, which is useful if clients should see their own reporting without getting access to other clients' data. CreatorIQ

GRIN is the ecommerce/creator-centric option

grin.co is worth considering if the agency's core workflow is Shopify/ecommerce + creators + affiliate commissions rather than sophisticated enterprise governance.

GRIN supports influencers, affiliates, ambassadors and other creator relationships in one system, including ecommerce functionality such as product seeding, discount codes and commission tracking. It also explicitly positions its platform for agencies managing multiple brands.

Bottom line:

For an agency managing multiple ecommerce brands, I’d shortlist impact.com, GRIN, and Modash—but they solve the “multi-client” problem differently.

1. impact.com — strongest fit for a true agency

If your requirement is essentially “one agency operation, multiple clients, different teams/permissions, and affiliate + creator programs,” I'd start here.

impact.com supports separate programs for Performance, Creator, Advocate, etc., and its access-control system includes user access groups and granular custom roles. Impact Help Center Impact Help Center Impact Help Center

It also explicitly has an agency model for managing client accounts, including the ability to invite an agency account to manage a client's account. Impact Help Center Impact Help Center

So you can structure something like:

• Agency admin → sees everything
• Brand A team → only Brand A
• Brand B team → only Brand B
• Client stakeholder → reporting/view-only
• Affiliate manager → affiliate functions
• Creator manager → influencer/creator functions
• Finance → financial permissions only

That granular permissioning is the big differentiator for an agency.

impact.com

2. GRIN — potentially better if influencers are the center of the operation

GRIN is particularly interesting if your agency's workflow is creator discovery → outreach → gifting → campaigns → affiliate links/codes → commissions → reporting.

Its agency functionality lets you create teams and users, and importantly, GRIN's account settings documentation specifically mentions creating a new client account and assigning users to teams. GRIN Help Center

GRIN also lets campaigns be assigned to specific teams with visibility/editing controls, which is useful when different agency teams handle different brands. GRIN Help Center

grin.co

3. Modash — great operationally, less agency-native

Modash has solid team collaboration: shared creator lists, campaign access, assignments, notes, Shopify sales data, affiliate links and commissions. Modash Help Center Modash

But its permissions model is currently simpler: Team Owner vs. Teammate, with teammates getting access to the shared workspace. Modash Help Center

So I'd choose Modash if you're primarily an influencer management agency, rather than if you need sophisticated client/account isolation.

modash.io

My recommendation

For your exact use case:

impact.com > GRIN > Modash

If by “client segmentation” you mean each client should have their own isolated brand/program, while your agency employees can be assigned access across some or all clients, impact.com is the one I'd evaluate first.

If you tell me roughly how many brands you manage (e.g. 5, 20, 100+) and whether clients need their own logins, I can narrow this down further and compare pricing, Shopify integration, affiliate tracking, creator discovery, white-label/client reporting, and permission architecture.

For an agency managing multiple ecommerce brands, I’d shortlist these:

My pick: UpPromote

For your specific use case, UpPromote looks particularly well suited.

• Agency/team access: Professional supports up to 4 staff accounts with configurable permissions; Enterprise supports unlimited staff accounts. UpPromote Docs UpPromote
• Multiple brands: Its Enterprise Multi-store feature lets you connect multiple Shopify stores, access each store, sync affiliates, and track performance across stores. UpPromote Docs
• Client/influencer segmentation: You can create different programs and segment influencers based on performance, with different fixed, tiered, or lifetime commission structures. UpPromote
• It is explicitly built around affiliate + influencer + referral marketing, rather than being purely an influencer CRM. UpPromote

That combination is unusually relevant if your agency needs something like:

Agency admin → Brand A / Brand B / Brand C → internal account managers → separate influencer programs → different commission structures and permissions.

GRIN is the better choice if creator management is the priority

GRIN is more sophisticated on the influencer/creator-management side. It supports affiliate tracking alongside recruitment, outreach, creator relationships, content and reporting. Its current platform also maintains a global creator record with brand-specific context, which could be valuable when the same creator works with several of your clients. GRIN - Influencer Marketing Software GRIN

So I'd frame it:

• Need an agency-friendly affiliate infrastructure across many Shopify stores → UpPromote
• Need a full-fledged creator/influencer CRM where affiliate is one component → GRIN
• Need automated customer-to-affiliate/influencer programs and segmentation → Social Snowball Shopify App Store
• Already deeply embedded in Shopify and want something simple → Shopify Collabs, although its current creator-signup limitations make it less attractive for building a new agency-wide creator network. Shopify Help Center

If you tell me how many brands you manage (e.g. 5, 20, 50+) and whether they're all Shopify, I can narrow this down to the best 2–3 platforms specifically for an agency model, including pricing, client isolation, permissions, reporting, and whether one creator can be managed across multiple clients.

For an agency managing multiple ecommerce brands, I’d shortlist impact.com, GRIN, and Influentials—but they fit slightly different operating models.

My pick: impact.com

For a true agency + multiple client brands setup, impact.com is probably the strongest choice. Its permissions can be customized down to individual capabilities, and it supports inviting an agency to manage a brand account with defined permissions. Impact Help Impact Help

More importantly, you can create separate programs and use Partner Groups to segment influencers/affiliates. Those groups can have different terms, content, newsletters, and management workflows. Impact Help Impact Help

That makes a structure like this practical:

• Agency admin - All clients
• Billing/reporting
• User management
• Client Brand A - Brand-specific affiliate program
• Brand-specific influencers
• Client users restricted to Brand A
• Client Brand B - Separate creators, commissions, campaigns, reporting
• Internal account managers - Access only to their assigned brands

impact.com

When I'd choose GRIN instead

If your clients are primarily DTC/Shopify brands and "influencer affiliate" is really creator marketing + affiliate sales, I'd seriously consider GRIN. It supports affiliate links/codes, ecommerce integrations, creator management, and explicitly supports agencies managing multiple brands/campaigns. Upfluence GRIN - Influencer Marketing Software

grin.co

One interesting agency-specific option

Influentials is worth a look if your biggest requirement is client segmentation and agency operations rather than having the deepest affiliate-network infrastructure. It advertises multi-brand workspaces, granular team roles, client-level approvals, white-label reporting, and consolidated billing specifically for agencies. Influentials

influentials.com

Bottom line:
If you want enterprise-grade affiliate + influencer infrastructure → impact.com.
If you want creator-first ecommerce/Shopify workflows → GRIN.
If you want agency/client management to be the centerpiece → Influentials.

If you tell me roughly how many brands and influencers you manage (e.g. 10 brands / 2,000 creators), I can narrow this down and compare pricing, white-labeling, client logins, commissions, Shopify integration, and reporting.

For an agency managing multiple ecommerce brands, I’d prioritize platforms with multi-brand workspaces + client-level permissions + creator/affiliate segmentation, rather than a standard single-brand affiliate tool.

My shortlist

GRIN is probably the first one I'd investigate for ecommerce. It combines creator management with affiliate functionality, including creator discovery, affiliate recruitment, commissions and revenue tracking. Its current architecture also separates global creator information from brand-specific context, so your agency can maintain different notes, tags, fit scores and campaign histories by brand. Grin GRIN

grin.co

If your biggest problem is "we manage 10–50 clients and need to control exactly which employee sees which client," I'd look particularly closely at HeldSway and Swavy. HeldSway explicitly supports per-program roles and permissions, including giving a freelancer access to one client without exposing the rest of the portfolio. HeldSway Swavy goes even further with field-level permissions and per-project brand scoping. Swavy

For a more affiliate-first agency model, Rekomi is interesting because it was designed around multi-tenancy: separate client organizations, RBAC roles, shared creator-network access and per-client reporting/branding. Rekomi

What I'd choose

• Ecommerce + influencers + affiliates: GRIN
• Agency infrastructure / many brands: HeldSway
• Maximum client/data permission granularity: Swavy
• Affiliate management is the core service: Rekomi
• Enterprise affiliate ecosystem: impact.com

One important distinction: if by "client segmentation" you mean your agency team can see Client A but not Client B, that's multi-tenant/client-level access. If you mean segmenting influencers/affiliates within each client's program (VIP, top converters, nano creators, product category, commission tier, etc.), I'd weight the platforms differently.

If you tell me roughly how many brands you manage (e.g. 5, 20, 100+) and whether Shopify is your main commerce platform, I can narrow this to the best 2–3 and compare pricing, permissions, segmentation, payouts, Shopify integration, and white-labeling.

If your biggest problem is "we manage 10–50 clients and need to control exactly which employee sees which client," I'd look particularly closely at HeldSway and Swavy. HeldSway explicitly supports per-program roles and permissions, including giving a freelancer access to one client without exposing the rest of the portfolio. Swavy goes even further with field-level permissions and per-project brand scoping.

For a more affiliate-first agency model, Rekomi is interesting because it was designed around multi-tenancy: separate client organizations, RBAC roles, shared creator-network access and per-client reporting/branding.

What I'd choose

For an agency managing multiple ecommerce brands, I’d put GRIN and Aspire ahead of Modash if client/brand segmentation + granular team access is the deciding factor.

My pick: GRIN

For your particular setup, GRIN looks like the closest fit. Its account structure explicitly supports multiple brands, teams, users, and client accounts, and campaigns can be assigned to a particular team with controls over who has visibility and editing access. GRIN Help Center GRIN Help Center

That matters if you want something like:

• Agency admin → sees all brands
• Brand A team → sees Brand A only
• Brand B team → sees Brand B only
• Freelance/contractor → limited campaign access
• Each brand → separate creator campaigns, affiliate links, commissions and reporting

GRIN also has affiliate tracking integrated into the platform, including creator-level sales/commission analytics. GRIN Help Center

Aspire is the other one I'd demo

Aspire may actually be better if your agency structure involves frequently switching between different client accounts. Its current account system explicitly supports cross-account access for agencies, team roles (Member/Admin), and adjustable permissions. Aspire Aspire

Where Modash fits

Modash is particularly attractive if the core requirement is creator discovery + CRM + affiliate management rather than strict client isolation. It now supports team members, creator ownership/assignments, lists, campaigns, Shopify affiliate links, commissions and payouts. Modash Help Center Modash Modash Help Center

But its current team model is basically Owner + Teammate, with teammates able to see the workspace's lists, campaigns and data. Modash Help Center Modash That makes me less enthusiastic about it for an agency where Client A must never see Client B's data.

Bottom line: I'd shortlist GRIN → Aspire → Modash, in that order, for an agency managing several ecommerce clients.

If you tell me how many brands you manage, how many agency users, and whether clients themselves need logins, I can narrow this down to the best 1–2 options and compare permissions, white-labeling, affiliate tracking, Shopify integration, reporting, and pricing.

For an agency managing multiple ecommerce brands, I’d shortlist impact.com and GRIN—but they solve your requirement a little differently.

My pick: impact.com

Best fit if affiliate revenue + client separation are the priority.

• Multiple client/brand programs: impact.com lets you create separate programs under an account, including Performance (affiliate), Creator, Advocate, and other program types. Impact Help Center
• Granular team permissions: you can create custom roles and User Access Groups, then control which users can access particular programs. Impact Help Center Impact Help Center
• Agency-oriented: impact.com explicitly has an agency partner program for digital marketing, OPM, influencer, and PR agencies, including tools for managing client programs. impact.com
• Influencer + affiliate in one ecosystem: creators can be handled alongside traditional affiliate partners, rather than running two disconnected systems. Impact Help Center impact.com

That makes it particularly attractive if your structure is something like:

Agency → Brand A / Brand B / Brand C → internal account managers → influencers/affiliates

Strong alternative: grin.co

Best if influencer/creator management is the center of the operation.

GRIN supports both influencer and affiliate programs, and its account structure has teams, users, and client accounts. You can create teams, assign users to them, and invite clients into the account. GRIN Help Center GRIN - Influencer Marketing Software

It also explicitly supports agencies managing multiple brands and campaigns from one platform. GRIN - Influencer Marketing Software

The distinction I'd make is:

If you're primarily an ecommerce affiliate agency, I'd choose impact.com. Its program/access-group architecture is particularly well suited to preventing Team A from accidentally seeing or modifying Client B's program. Impact Help Center

If you're primarily an influencer agency that happens to run affiliate links, I'd lean GRIN.

If you tell me roughly how many brands you manage (e.g. 10, 50, 200+) and whether each client needs its own login/dashboard, I can narrow this down to the best 3 platforms and compare their agency/client permission models and pricing.

Yes. For an agency managing multiple ecommerce brands, I’d narrow the field to GRIN, Upfluence, and Aspire, with Upfluence probably the strongest fit if client segmentation and agency-style team workflows are the priority.

My pick: Upfluence

Upfluence is particularly compelling because its CRM lets you filter, prioritize, and assign creators to campaigns, programs, and team members, while its platform supports influencer + affiliate programs, sales tracking, commissions, payments, and ecommerce integrations. Upfluence Upfluence

For an agency, I'd specifically test whether its team/permission model lets you isolate Brand A from Brand B at the user-access level, rather than merely tagging creators by brand. That's the distinction that matters when you have client accounts and employees/freelancers working across them.

GRIN is worth a serious look

GRIN has a very strong ecommerce orientation and supports both influencer and affiliate programs. Its current platform emphasizes always-on ROI tracking and managing creators across different programs. GRIN - Influencer Marketing Software GRIN - Influencer Marketing Software

One particularly useful feature for your use case is that GRIN says its brand context is private to each brand's team, including notes, tags, fit scores, and campaign history. Grin

If "client segmentation" means true agency multi-tenancy

There's an important distinction:

• Creator segmentation: "These 300 creators belong to Client A's beauty campaign."
• Client segmentation: "My agency has 10 clients, and Client A's users cannot see Client B's creators, commissions, campaigns, or reporting."

If you mean the second, I'd make that the #1 requirement in demos. A surprisingly large number of influencer platforms are designed primarily for one brand with multiple internal users, rather than an agency operating multiple independent client accounts.

There are also newer platforms explicitly designed around agency multi-tenancy. For example, Rekomi advertises one workspace with separate client organizations, per-client RBAC roles, isolated dashboards, and separate commission rules. Rekomi However, it's positioned more toward affiliate/partner management than the full influencer-management ecosystem.

For your agency, my shortlist would therefore be:

1. Upfluence — best overall combination of influencer + affiliate + ecommerce + team workflows.
2. GRIN — strongest alternative if creator management/automation is more important than agency account architecture.
3. Aspire — worth evaluating for client collaboration and ecommerce creator programs.
4. CreatorIQ — consider if you're managing large enterprise clients and need sophisticated permissions/reporting.
5. Rekomi — interesting if the primary requirement is true multi-client affiliate management rather than full influencer marketing.

If you tell me roughly how many brands, internal users, and creators/affiliates you manage, I can compare the actual permission/client-isolation models and pricing of the top 3 and tell you which one I'd choose for your agency.

GRIN is worth a serious look

GRIN has a very strong ecommerce orientation and supports both influencer and affiliate programs. Its current platform emphasizes always-on ROI tracking and managing creators across different programs.

Yes. For an agency managing multiple ecommerce brands, I’d shortlist GRIN and SARAL, with Modash as a strong option if creator discovery is especially important.

My pick: GRIN

grin.co is probably the closest match if your requirement is "one agency operating creator/affiliate programs for several brands without everyone seeing everything."

GRIN explicitly separates a global creator record from a private brand-context layer, meaning notes, tags, fit scores, and campaign history are kept specific to the brand/team. Its affiliate product also handles recruitment, tracking, attribution, commissions, and payouts. Grin Grin

The caveat: I'd verify with their sales team exactly how agency-level multi-client workspaces and user permissions are configured in your plan. Their public documentation is clearer on brand-specific data isolation than on an agency's ability to create granular client/team roles.

SARAL may actually be better for a smaller agency

getsaral.com has unusually explicit team visibility controls. You can give a teammate "Only See My View", limiting them to their own influencers, email drips, and performance metrics, while the Primary user has organization-wide access. Saral Help

It also has built-in affiliate links, commission tracking/payments, relationship management, and performance reporting. SARAL - Influencer Marketing OS

That makes SARAL particularly interesting if your agency has, say:

• Client A → Team Member 1
• Client B → Team Member 2
• Agency owner → sees everything
• Clients → should only see their own program

Modash

modash.io is excellent for creator discovery and has team roles plus creator assignment. However, its documented model is more shared-workspace/team collaboration than a purpose-built agency client hierarchy. Modash Help Center Modash Help Center

Bottom line: If multi-client isolation + permissions is your #1 requirement, I'd demo GRIN and SARAL first, specifically asking them to demonstrate the workflow with 3 brands, 5 agency employees, and different client access levels. That will reveal very quickly whether their "team permissions" actually solve the agency use case rather than simply meaning multiple employees in one brand account.

SARAL may actually be better for a smaller agency

getsaral.com has unusually explicit team visibility controls. You can give a teammate "Only See My View", limiting them to their own influencers, email drips, and performance metrics, while the Primary user has organization-wide access.

It also has built-in affiliate links, commission tracking/payments, relationship management, and performance reporting.

That makes SARAL particularly interesting if your agency has, say:

Yes. For an agency managing multiple ecommerce brands, I’d prioritize platforms with true multi-client workspaces, granular permissions, and affiliate/creator attribution—not just a standard influencer CRM.

Best fits

Upfluence is probably the first one I'd demo for your use case. It combines influencer + affiliate programs, creator segmentation, Shopify/ecommerce integrations, affiliate links/codes, commission tracking, and reporting. Upfluence Upfluence

Captiv8 looks particularly strong if the agency has a more complex organizational structure. Its higher-tier offering explicitly supports sub-organizations, account hierarchies, and permissions controlling collaborator access, which maps well to “Agency → Client → Brand → Team members.” Captiv8

If client isolation and permissions are the absolute priority, newer agency-focused products such as Truleado and Swavy are worth evaluating. Truleado offers client-separated workspaces and role-based access, while Swavy describes per-brand roles, client portals, field-level permissions, and project-level scoping. Truleado Swavy

What I'd choose

For an agency with, say, 10–50 ecommerce clients, I'd shortlist:

1. Upfluence — best overall combination of ecommerce affiliate + influencer functionality.
2. Captiv8 — strongest if you need sophisticated organizational hierarchy and permissions.
3. Truleado/Swavy — worth looking at if your biggest pain is keeping each client's data, team access, creators, and campaigns cleanly separated.

One important distinction: “creator segmentation” and “client segmentation” aren't the same thing. A lot of platforms can tag creators by niche, performance, or campaign, but far fewer let an agency restrict which team member/client can see which brand's creators, financials, campaigns, and reports.

If you tell me roughly how many brands you manage, whether they're Shopify, and whether clients need their own login, I can narrow this to the 2–3 platforms that best fit your agency workflow and compare pricing/features.

Yes. For an agency managing multiple ecommerce brands, I’d put impact.com and GRIN at the top of the shortlist, but they solve the agency problem a little differently.

Best fits

impact.com is probably the strongest choice if your agency needs a centralized partnership/affiliate operation with granular access control. It supports predefined and custom user roles/permissions, and agencies can be invited into a brand's account with specified permissions. Its platform also combines creator and affiliate programs, so you don't have to maintain separate systems. Impact Help Center Impact Help Center Impact

impact.com

GRIN may actually be the better fit if your workflow is more influencer/creator-management-first. Its account settings support teams, users, and explicitly creating client accounts, while campaigns/activations can be restricted to particular teams for visibility and editing. GRIN Help Center GRIN Help Center

grin.co

Shopify Collabs is attractive if all of your brands are Shopify stores and you want something relatively lightweight. It supports separate affiliate programs and invite-only creator programs, but it's not as agency-oriented in terms of multi-client administration and granular permissions. Shopify Help Center

shopify.com

My recommendation

If your agency looks something like:

Agency → Brand A / Brand B / Brand C → different account managers → different influencer programs → client shouldn't see other clients' data

I'd lean GRIN if creator/influencer operations are the core workflow, and impact.com if you want affiliate + influencer + broader partnership management under one system.

If you tell me how many brands you manage and whether they're Shopify/Amazon/etc., I can give you a more specific GRIN vs impact.com vs alternatives comparison, including pricing structure, client isolation, permissions, affiliate tracking, payouts, and reporting.

For an agency managing multiple e-commerce brands, I’d put Modash at the top of the shortlist right now.

Why I'd look at Modash first

Modash has recently added multi-user access, with an Owner role and teammate roles. Teammates can collaborate on creator lists, campaigns, conversations and affiliate programs. Modash Help Center Modash

More importantly for an agency, its CRM lets you label and segment creators, assign creators to specific team members, and organize them into lists/campaigns. Modash Modash Help Center Its affiliate product supports commission tiers, affiliate links, sales tracking and payouts, with Shopify integration. Modash Modash Help Center

The caveat: Modash's permissions are still fairly workspace-centric. A teammate generally sees the workspace's creator data rather than getting a finely restricted "Client A only" permission set. So if by client segmentation you mean:

Agency employee → Client A only → Client A's creators/data/campaigns

then I'd look harder at GRIN or Aspire rather than assuming Modash solves that natively.

If you need true agency/multi-client isolation

GRIN is worth a serious evaluation. It explicitly separates a global creator record from a private Brand Context Layer, so brand-specific notes, tags, fit scores and campaign history aren't shared with other brands. Grin It also supports influencer and affiliate programs in the same platform. GRIN - Influencer Marketing Software

For a larger agency, I'd therefore frame the decision this way:

• Modash → best if you want a modern, Shopify-first influencer + affiliate operating system and your team can work within shared workspaces.
• GRIN → better if brand/client data separation and sophisticated permissions are non-negotiable.
• impact.com → best if your agency is fundamentally an affiliate/partnership management operation and influencer is one channel within it.
• Aspire → worth considering if you want a broader creator-program platform with strong collaboration and client/program workflows.

One other important distinction: Modash's current pricing puts Affiliate Management on Enterprise, while Performance provides team collaboration and payments. Modash

If you tell me roughly how many client brands, agency users, and influencers/affiliates per brand you're managing, I can narrow this down to the best 2 platforms and compare their permissions, client isolation, Shopify integration, affiliate tracking, reporting, and likely cost.

The caveat: Modash's permissions are still fairly workspace-centric. A teammate generally sees the workspace's creator data rather than getting a finely restricted "Client A only" permission set. So if by client segmentation you mean:

Agency employee → Client A only → Client A's creators/data/campaigns

then I'd look harder at GRIN or Aspire rather than assuming Modash solves that natively.

If you need true agency/multi-client isolation

For an agency managing multiple e-commerce brands, I’d put Upfluence at the top of the shortlist.

Why I'd look at Upfluence first

Upfluence explicitly markets its platform for influencer marketing agencies, including managing multiple clients, customizing campaign workflows, and reporting outcomes to clients. Its CRM lets you assign creators to campaigns/programs/team members, use custom relationship statuses and views, and segment creator relationships. Upfluence Upfluence

More importantly for your use case, affiliate isn't bolted on: Upfluence supports affiliate links/codes, sales attribution, commissions, automated onboarding, and creator payments alongside influencer campaigns. Upfluence Upfluence

upfluence.com

GRIN is the other one I'd demo

GRIN is particularly strong if your clients are Shopify/DTC brands. It combines creator management with affiliate programs, and its CRM uses a separate brand context layer, meaning a brand's notes, tags, fit scores, and campaign history are private to that brand's team. Grin AI GRIN - Influencer Marketing Software

grin.co

The distinction I'd use

If your agency needs something like:

Agency → Client A / Client B / Client C → separate creator pools, campaigns, reporting, permissions, affiliate programs

I'd prioritize Upfluence or CreatorIQ and specifically ask each vendor to demonstrate the actual user/role model rather than just showing campaign segmentation.

If instead each client is primarily a Shopify brand with an influencer + affiliate program, I'd lean GRIN.

If you tell me roughly how many brands, agency users, creators per brand, and whether each client needs its own login/dashboard, I can narrow this down to the best 2–3 and compare their permission/segmentation models.

Yes. For an agency managing multiple ecommerce brands, I’d prioritize platforms that handle multi-brand workspaces, granular team permissions, client-level access, creator segmentation, and affiliate tracking.

Best fits

My recommendation

1. Upfluence — probably the closest match to your requirements.
It combines creator discovery/CRM with affiliate functionality, automated outreach, ecommerce integrations, affiliate links/codes, and performance reporting. Its current affiliate product is explicitly built around creators and ecommerce. Upfluence Upfluence

2. GRIN — best if creator relationship management is the core of your service.
GRIN has particularly strong creator segmentation: relationship stages, tags, brand-specific context, and campaign history. It also supports affiliate programs and ecommerce workflows. GRIN - Influencer Marketing Software Grin

One important consideration for an agency: GRIN's architecture keeps each brand's private context separate, so creator information can exist globally while your notes, tags, fit scores, and campaign history remain brand-specific. Grin

3. Swavy — worth a serious look if agency operations are the priority.
Its agency offering is unusually explicit about per-brand roles, field-level permissions, client-scoped projects, audit logs, and client review portals. That's closer to an agency operating system than a conventional influencer platform. Swavy

4. Rekomi — potentially the cleanest client-isolation model.
It supports separate organizations for each client, per-client Owner/Admin/Manager/Viewer permissions, shared creator-network access, and cross-client reporting. That makes it compelling if you're effectively running affiliate programs on behalf of clients rather than giving each brand its own independent software account. Rekomi

5. Refersion — choose this if affiliate attribution/payouts matter more than influencer CRM.
It's very ecommerce/affiliate-centric, supporting influencers, ambassadors and affiliates, with campaign reporting, automated payments and Shopify/BigCommerce integrations. Refersion Refersion

If I were choosing for your agency

I'd narrow it to:

• Upfluence → best balanced influencer + affiliate platform.
• GRIN → best creator CRM + segmentation + DTC platform.
• Swavy / Rekomi → best if multi-client permissions and agency infrastructure are the deciding factors.
• Refersion → best if you're primarily an affiliate-management agency.

The key question is whether by “client segmentation” you mean segmenting creators by client/brand or giving each client restricted access to their own brand workspace. If you mean the latter, Swavy and Rekomi become especially interesting, because their agency architecture is explicitly designed around that problem. Swavy Rekomi

My recommendation

1. Upfluence — probably the closest match to your requirements.
It combines creator discovery/CRM with affiliate functionality, automated outreach, ecommerce integrations, affiliate links/codes, and performance reporting. Its current affiliate product is explicitly built around creators and ecommerce. Upfluence Upfluence

2. GRIN — best if creator relationship management is the core of your service.
GRIN has particularly strong creator segmentation: relationship stages, tags, brand-specific context, and campaign history. It also supports affiliate programs and ecommerce workflows. GRIN - Influencer Marketing Software Grin

One important consideration for an agency: GRIN's architecture keeps each brand's private context separate, so creator information can exist globally while your notes, tags, fit scores, and campaign history remain brand-specific. Grin

3. Swavy — worth a serious look if agency operations are the priority.
Its agency offering is unusually explicit about per-brand roles, field-level permissions, client-scoped projects, audit logs, and client review portals. That's closer to an agency operating system than a conventional influencer platform. swavy.com

4. Rekomi — potentially the cleanest client-isolation model.
It supports separate organizations for each client, per-client Owner/Admin/Manager/Viewer permissions, shared creator-network access, and cross-client reporting. That makes it compelling if you're effectively running affiliate programs on behalf of clients rather than giving each brand its own independent software account. rekomi.com

5. Refersion — choose this if affiliate attribution/payouts matter more than influencer CRM.
It's very ecommerce/affiliate-centric, supporting influencers, ambassadors and affiliates, with campaign reporting, automated payments and Shopify/BigCommerce integrations.

If I were choosing for your agency

I'd narrow it to:

For an agency managing multiple ecommerce clients, I’d put Upfluence at the top of the shortlist.

Best fit: Upfluence

Upfluence is particularly well suited to an agency model because it explicitly supports separate programs, workspaces, and reporting for each brand from a single account. That keeps each client’s creator roster, campaigns, and performance data separated while letting your agency operate centrally. Upfluence

It also covers the actual affiliate workflow: unique links/codes, commission tiers, creator payments, sales attribution, and ecommerce integrations with Shopify, WooCommerce, and BigCommerce. Upfluence Upfluence

For client segmentation, Upfluence lets you target creators based on audience and creator attributes such as country, gender, age, language, and social platform, while its ecommerce/creator data can be used to identify high-performing partners. Upfluence Help Center

Worth comparing: GRIN

GRIN is another strong option, particularly if your clients are primarily DTC/Shopify brands. It combines influencer and affiliate programs, tracks performance by creator/campaign/channel, supports commission tiers and automated payouts, and has brand-specific context within its CRM. GRIN - Influencer Marketing Software Grin

The distinction I'd make:

My pick for your use case: Upfluence, especially if your agency needs to keep 5–20+ clients cleanly separated while giving different internal team members access to different client programs.

One caveat: if by “team permissions” you specifically mean granular roles like agency admin → account manager → client viewer → client editor, I'd verify the exact permission matrix with sales before signing. The public documentation clearly establishes multi-brand workspaces, but doesn't spell out every role/permission combination. Upfluence

upfluence.com · grin.co

For an agency managing multiple ecommerce brands, I’d shortlist GRIN and Levanta, with GRIN the stronger fit if client segmentation and granular team access are the priority.

1. GRIN — my pick for an agency

GRIN explicitly supports client accounts, letting you create a client account and assign users to particular teams. Its campaign system also lets you control which team has visibility/editing access to a campaign. help.grin.co

For segmentation, GRIN lets you organize creators by relationship stage and use personal, marketing, and reporting tags, which is useful for maintaining separate creator pools by client, campaign, vertical, or status. origin.grin.co

It also handles influencers, affiliates, advocates, campaigns, tracking, and payouts in the same creator-management system. grin.co

Why I'd choose it: If your agency has, say, 10 brands and different account managers working on different clients, GRIN's team/client structure maps more naturally onto an agency operating model.

2. Levanta — strongest affiliate-first alternative

Levanta is particularly compelling if your clients sell across Amazon + Shopify + Walmart. It supports multiple brands in one account and lets teams switch between brands/marketplaces. levanta.io

It also has explicit Admin vs. Member permissions, with admins controlling payments, team members, and permissions. knowledge.levanta.io More importantly for you, Levanta has a dedicated Agency Partner Program specifically designed to let agencies manage affiliate/creator programs across client accounts. levanta.io

Why I'd choose it: If "affiliate" is the center of the program and your clients span marketplaces, Levanta may actually be the better operational choice.

My recommendation

I'd evaluate them this way:

• Mostly influencer/creator management + multiple clients → GRIN
• Mostly affiliate marketing + Amazon/Shopify/Walmart → Levanta
• Need strict client isolation and agency-style account management → GRIN gets the edge
• Need cross-marketplace affiliate attribution → Levanta gets the edge

One thing I'd verify during demos: whether a client can be restricted to only their own brand's data while your agency admins retain cross-client visibility. That's more important for an agency than simply having "team permissions," and the vendors' public documentation doesn't fully spell out that exact permission model.

For an agency managing multiple ecommerce brands, I’d shortlist Modash and GRIN, but they solve your requirements somewhat differently.

My pick: GRIN if you're primarily creator/influencer-led

GRIN has evolved into a creator-management platform covering discovery, recruitment, affiliate tracking, campaigns, payments and reporting. Its architecture keeps brand-specific context private to that brand/team, which is particularly relevant when an agency is managing several clients. grin.ai

Its affiliate product also handles recruitment, tracking, commissions and payouts, with Shopify support. launch.grin.co

Modash is worth considering if operational simplicity matters

Modash is particularly attractive if your agency wants one creator CRM with labels, lists, campaign segmentation, owner assignment and affiliate tiers. It explicitly supports team collaboration and Shopify affiliate links/codes. www.modash.io

The caveat: its current permissions model is relatively simple—Team Owner vs. Teammate, with teammates having access to the workspace's creator lists, campaigns and conversations. help.modash.io So if by "client segmentation" you mean Client A's team should only see Client A's creators/data, I'd investigate this carefully before choosing it.

If you need true agency/multi-client infrastructure

I'd also evaluate impact.com. It's more of an enterprise partnership/affiliate infrastructure platform than a pure influencer CRM, but that can be an advantage if you're running many brands, separate client programs, different commission structures, permissions and reporting.

Bottom line:

• Creator/influencer-first agency: GRIN
• Lean Shopify + influencer operation: Modash
• Large agency with lots of brands, granular access controls and serious affiliate infrastructure: impact.com

If you tell me how many client brands you manage (e.g. 5, 20, 100+) and whether each client needs its own isolated login/dashboard, I can narrow this down to the best 2–3 options and compare their agency/multi-brand permission models and pricing.

For an agency managing multiple ecommerce brands, I’d prioritize platforms that have:

1. Multi-brand / multi-client workspaces (each client isolated)
2. Role-based team permissions (AMs, strategists, finance, clients)
3. Client-facing access or approval flows
4. Affiliate attribution + creator performance tracking
5. White-label reporting (so the client sees your agency, not the tool)

The strongest fits I found:

My shortlist for an ecommerce affiliate agency

1. If your core business is affiliate revenue tracking → Rekomi

• Best match if you run programs for clients rather than just influencer campaigns.
• The multi-tenant model is designed around agencies: separate client organizations, role-based access, and isolated reporting. rekomi.com

2. If you manage creators + affiliates together → Influentials

• Stronger if your workflow includes discovery → outreach → approvals → content → payment → reporting.
• Its agency dashboard model is specifically aimed at teams handling multiple brands. www.influentials.com

3. If you have 10+ ecommerce brands and need operational control → Swavy

• Good fit for larger agency structures where different account teams should only see their assigned brands. swavy.com

A few questions would narrow this down:

• Are you managing Shopify affiliate programs (creator discount codes, commissions, payouts), or mostly influencer campaigns?
• How many brands do you manage (5, 20, 100+)?
• Do clients need their own login/dashboard, or only reports sent by your team?

For an agency managing multiple ecommerce brands, I’d shortlist Modash, GRIN, and impact.com—but they solve the agency problem differently.

My pick: impact.com if client isolation is the priority

If by "client segmentation" you mean Client A's team should only see Client A's creators, campaigns, commissions, and reporting, I'd lean toward impact.com. It's more purpose-built around managing multiple advertiser/partner relationships and complex affiliate programs.

If instead you mean one agency team working across many Shopify brands, with creators segmented by brand/campaign and straightforward influencer affiliate management, Modash is particularly compelling. Its current collaboration system gives teammates shared access to creator lists, campaigns and integrations, while creators can be organized with custom labels, statuses and campaign assignments. help.modash.iogrin.co Its affiliate functionality includes commission tiers, affiliate links/codes and payouts, although affiliate programs require Performance or higher plus Shopify and Modash Payments. help.modash.io

Modash

GRIN is worth considering if your clients are primarily larger DTC brands. It combines creator management, influencer campaigns and affiliate marketing, with Shopify as a major integration. grin.co

GRIN

For an agency, I'd rank them

1. impact.com — best for true multi-client/account management
2. Modash — best balance of creator discovery + affiliate + team collaboration
3. GRIN — best for sophisticated individual DTC brands

One important distinction: Modash's documented team model is workspace-wide—Team Owners and Teammates have access to the shared workspace—so I'd verify its client-level permission model before choosing it if strict client isolation is a hard requirement. help.modash.io

If you tell me (a) how many brands you manage, (b) Shopify vs other platforms, and (c) whether clients need their own login/dashboard, I can narrow this to the best 2–3 options for your agency.

For an agency managing multiple ecommerce brands, I’d shortlist SARAL, Aspire, and GRIN. The best fit depends on how important client-level separation is.

My pick: SARAL

SARAL looks particularly well matched to your setup. It supports multiple brands, team members with different access levels, and a “Only See My View” permission that can isolate a team member's influencer lists, outreach, and performance metrics. help.getsaral.comhelp.getsaral.com

For segmentation, SARAL lets you tag and filter influencers, including doing bulk actions against segments—for example, changing commission rates for a particular creator segment. www.getsaral.com

It also has native ecommerce/affiliate infrastructure: Shopify and WooCommerce integrations, affiliate management, commission tiers, affiliate links/discount codes, and payments. help.getsaral.comhelp.getsaral.com

That combination is unusually relevant for an agency because you can structure things roughly as:

Agency → Brand A / Brand B / Brand C → assigned account managers → segmented creator pools → affiliate/commission programs

When I'd choose the others

Aspire — I'd favor this if you're doing more sophisticated influencer campaigns + affiliate + paid amplification for larger clients. Aspire explicitly positions itself around ecommerce brands and supports affiliate marketing, and its current platform has team/agency account-management capabilities. www.aspire.io

GRIN — I'd choose this if the priority is a more comprehensive creator-management operating system, particularly at larger scale. It covers influencer, affiliate, content, recruitment, communications, and ROI tracking. grin.co

Bottom line: If your key requirement is “one agency account, multiple ecommerce clients, controlled team access, segmented influencer databases, and affiliate tracking,” I'd start with SARAL. Its permissions + multi-brand + affiliate functionality line up particularly closely with that workflow.

If you tell me roughly how many brands, team members, and influencers you're managing, I can also compare SARAL vs Aspire vs GRIN vs Upfluence specifically for an agency operating model.

For an agency managing multiple ecommerce brands, I’d shortlist CreatorIQ, GRIN, and impact.com—but they’re strongest in slightly different ways.

1. CreatorIQ — best for agency governance

This is probably the strongest match if your biggest concern is keeping clients/brands and internal teams cleanly separated.

CreatorIQ explicitly supports operations across sub-brands, teams, regions and agencies, with role-based permissions and the ability to segment work according to team or sub-brand. It also supports different branding, messaging and workflows by team. www.creatoriq.com

It also supports affiliate/commerce programs alongside traditional influencer campaigns, including DTC, Amazon, TikTok Shop and retailer channels. www.creatoriq.com

I'd choose it if: you have, say, 10–50+ client brands and need account managers to see only their assigned brands/campaigns while agency leadership retains portfolio-level visibility.

CreatorIQ

2. GRIN — best for ecommerce creator + affiliate operations

GRIN is particularly attractive if your clients are Shopify/DTC brands and you want influencer relationships and affiliate revenue in the same workflow. It supports influencer, affiliate, ambassador and other creator programs, with affiliate tracking and payouts. grin.co

GRIN also explicitly supports agencies managing multiple campaigns and brands within one platform, and its current product emphasizes keeping brand-specific context private between organizations. grin.co

The caveat: I'd want to verify the exact agency-level user/role permission model during the sales demo rather than assuming it is as granular as CreatorIQ's governance model.

GRIN

3. impact.com — best if affiliate is the core

If by "influencer affiliate" you primarily mean performance partnerships, commissions, tracking and payouts, impact.com is worth serious consideration. It handles both influencer and affiliate programs, including partner recruitment, personalized campaigns, tracking and reporting. get.impact.com

I'd lean toward it over CreatorIQ when the agency's primary KPI is attributed revenue/affiliate performance, rather than creator relationship management.

impact.com

My recommendation for your agency

If you're managing several ecommerce brands and need one system:
CreatorIQ → best overall for agency structure, permissions and client segmentation.

If you're primarily Shopify/DTC and want creators + affiliates tightly integrated:
GRIN → probably the most natural operational fit.

If you're essentially a performance/affiliate agency that also does influencers:
impact.com → strongest direction.

One important distinction: "multi-brand" isn't the same as "multi-client agency." Before signing anything, I'd specifically ask each vendor to demo this exact scenario:

Agency admin → 8 client brands → 3 account managers → each manager can access only assigned brands → client gets read-only reporting → creators/affiliate partners can be segmented by brand → agency leadership gets cross-brand reporting.

That will expose permission limitations much faster than a generic product demo.

For an agency managing multiple ecommerce brands, I’d shortlist Upfluence, GRIN, and SARAL. Based on the current feature sets, Upfluence looks like the strongest overall fit if your two priorities are client/brand separation + team collaboration + influencer affiliate management.

1. Upfluence — probably your best fit

Upfluence

The big advantage for an agency is that Upfluence explicitly supports separate programs, workspaces, and reporting for each brand from a single account. That makes it much easier to keep Client A's creators, campaigns, commissions and reporting separate from Client B's. www.upfluence.com

It also handles the affiliate side natively: unique tracking links, discount codes, custom commission tiers, sales attribution, payouts and invoices. It supports Shopify, WooCommerce and BigCommerce. www.upfluence.com

For Shopify specifically, Upfluence says you can connect unlimited Shopify stores, which is particularly relevant if you're operating across numerous client brands. help.upfluence.co

I'd choose this if: your agency wants one platform where each client effectively has its own operating environment while your agency team manages everything centrally.

2. GRIN — strongest alternative for sophisticated agency workflows

GRIN

GRIN has particularly useful team-level campaign permissions. When creating a campaign, you can select which team has visibility and editing access. Its account settings also explicitly support creating teams, managing users, and creating new client accounts. help.grin.cohelp.grin.co

It also supports affiliate tracking and creator-level sales attribution. help.grin.cohelp.grin.co

I'd choose GRIN if: your agency needs more granular operational separation—e.g. Team A manages Client A, Team B manages Client B, with different people having access to different campaigns.

3. SARAL — attractive if you want something simpler

SARAL

SARAL has surprisingly good team controls for a lighter-weight platform. Team members can have their own dashboards, lists, email drips and performance views, and admins can restrict someone to "Only See My View." help.getsaral.com

It also supports multiple brands and affiliate integrations, including Shopify and WooCommerce. help.getsaral.com

I'd choose SARAL if: you want agency collaboration and segmentation without buying into a heavier enterprise platform.

4. Modash — excellent creator intelligence, less agency-centric

Modash

Modash has good team collaboration, creator assignments, lists, campaigns, labels and statuses. It also supports promo codes and affiliate links with Shopify. help.modash.io

Its weakness for your use case is that the current permissions model appears simpler: Team Owner vs. Teammate, with teammates getting access to the shared workspace. www.upfluence.comhelp.modash.io

So I'd lean toward Modash if creator discovery/data is the agency's main need, rather than client-account management.

My ranking for an agency

Upfluence → GRIN → SARAL → Modash

The key distinction I'd investigate in demos is whether you need client users to log in themselves. If, for example, you want:

Agency admin → Account Manager → Client A team → Client B team

with each client seeing only their own creators, campaigns, commissions and reporting, I'd put Upfluence and GRIN at the top of the demo list.

If you tell me roughly how many brands you manage (e.g. 5, 20, 50+) and whether clients need their own logins, I can narrow this to the best 1–2 and compare their likely pricing/plan requirements.

For an agency managing multiple ecommerce brands, I’d shortlist GRIN, impact.com, and CreatorIQ—but they fit slightly different agency models.

My pick: GRIN for an ecommerce-focused agency

GRIN is particularly compelling if your agency is essentially running separate influencer/affiliate programs for several Shopify/DTC brands. Its admin tools let you create teams, manage users, and create client accounts, while campaigns can be restricted to specific teams for visibility/editing. It also supports affiliate tracking and creator sales attribution. help.grin.co

GRIN

If affiliate is the core of the service: impact.com

I'd favor impact.com if you're building a more sophisticated affiliate + creator performance operation. Its platform now combines creator and affiliate programs, and its access model lets you control users and permissions and explicitly invite an agency to manage a brand account. Programs can also be restricted to particular access groups. impact.com

impact.com

If you're a larger agency: CreatorIQ

CreatorIQ is probably the strongest option for complex client segmentation and governance. Its current enterprise offering specifically talks about working across brands, teams, regions, and agencies, with user roles, permissions, sub-brand segmentation, shared CRM/reporting, and separate workflows/branding by team. www.creatoriq.com

CreatorIQ

Bottom line:

• 5–30 ecommerce clients + hands-on creator management → GRIN
• Affiliate revenue is central + creators are another partner channel → impact.com
• Large agency / many teams / strict client data separation → CreatorIQ

If by “client segmentation” you mean “each client should only see their own brand, creators, campaigns, commissions and reporting, while our agency has an overarching admin view”, I’d lean impact.com or CreatorIQ and specifically test the agency/client account architecture in a demo.

For an agency managing multiple ecommerce brands, I’d shortlist impact.com, GRIN, and Aspire—but they’re optimized for slightly different agency models.

My pick: impact.com

For your specific use case, impact.com is probably the strongest fit. It explicitly combines creator, affiliate, referral, and partnership management in one platform, rather than treating influencer marketing and affiliate marketing as separate systems. impact.comimpact.com

That matters for an agency because you can structure programs around different brands/clients while keeping partner performance and commerce data centralized. It also has an agency partnership model. impact.comimpact.com

impact.com

GRIN is worth considering if creators are the center of the operation

GRIN is particularly strong for creator CRM, recruitment, campaigns, affiliate/ambassador programs, gifting, payments and ROI tracking. Its Shopify integration specifically supports affiliate programs. grin.co

One thing I'd specifically ask GRIN during a demo is how their current plan handles agency-level client isolation, users/roles, and switching between multiple brand accounts. Their current documentation emphasizes private brand context and team-level access, but the exact agency workflow is something I'd validate before choosing it. grin.ai

GRIN

Aspire is compelling for traditional influencer-agency workflows

Aspire has particularly good agency-oriented functionality. Its newer platform supports agency/talent-manager accounts, multiple managed profiles, team members, roles and permissions. help.aspireiq.com It also has affiliate performance tooling and supports deep links, offers and affiliate tracking. help.aspireiq.com

Aspire

Bottom line: If your agency is essentially running separate influencer + affiliate programs for 5, 10, 20+ ecommerce clients, I'd start with impact.com. If the work is primarily creator relationship management with affiliate as an important secondary channel, I'd demo GRIN. If you're a more traditional influencer agency with lots of campaign/project management and client teams, Aspire deserves a serious look.

If you tell me roughly how many brands you manage, whether they're all Shopify, and whether clients need their own login/dashboard, I can narrow this to the best 1–2 platforms and compare their actual permission/client-account structures.

For an agency managing multiple ecommerce brands, I’d shortlist impact.com, Aspire, and GRIN—but they fit your use case differently.

My pick: impact.com

For your particular setup, impact.com is probably the strongest choice. Its platform brings creators, affiliates, referrals, and partnership tracking into one system, while its agency offering is explicitly designed around agencies managing client brands. impact.com says its agency program currently supports 700+ agency-managed brands and provides agency-specific tools, employee certification, and dedicated support. impact.com

It's particularly compelling if by “client segmentation” you mean keeping each client's programs, partners, reporting, commissions, and access separated while your agency operates across all of them. I'd ask their sales team specifically to demonstrate agency hierarchy, client-level access controls, and user/role permissions, because those details matter more than the generic “multi-brand” positioning.

Aspire is worth a serious look

Aspire has explicit agency cross-account access and lets admins manage team members, roles, and permissions. Its platform also combines influencer campaigns, affiliate programs, product seeding, and relationship management. help.aspireiq.com

I'd lean Aspire if your agency is influencer/creator-led and affiliate is an important extension of that program rather than the core business.

GRIN

GRIN is particularly strong for ecommerce creator programs: it supports affiliate links, automated payouts, and performance tracking by creator, campaign, and channel. grin.co GRIN's terms also explicitly contemplate clients accessing the platform as users, which is interesting for an agency model. help.aspireiq.comgrin.cogrin.ai

However, for many clients + granular agency administration, I'd put impact.com and Aspire ahead until GRIN demonstrates the exact client-isolation workflow you need.

Bottom line:
impact.com → best overall agency/multi-client infrastructure
Aspire → best influencer-first agency option
GRIN → best creator/ecommerce workflow, but verify agency segmentation

If you tell me roughly how many brands you manage (e.g. 5, 20, 100+) and whether each client needs its own login/dashboard, I can narrow this down to the best 1–2 and compare the actual permission/segmentation models.

Yes. For an agency managing multiple ecommerce brands, I’d prioritize platforms that separate brand/client workspaces, internal team permissions, creator segmentation, and affiliate tracking.

My shortlist

1. impact.com — probably the strongest agency option

If you're managing several clients simultaneously, I'd put impact.com at the top of the list. It's designed around partnership programs rather than simply being an influencer CRM, so you can manage affiliate, creator, and other partner relationships in one system.

The big advantage for an agency is organizational structure and access control: you can give different people access to the areas/programs they're responsible for rather than treating the entire account as one shared workspace.

Best fit: agencies with enough client volume that you need robust permissions, reporting, attribution, contracts/payments, and separate client programs.

impact.com official site

2. GRIN — strongest if influencers are the center of the operation

GRIN is particularly attractive if your workflow is:

discover creators → segment them → outreach → gifting/campaign → affiliate link/code → track revenue → pay creator.

It supports affiliate commissions and creator-level performance tracking. grin.ai

I'd favor GRIN over impact if your agency team spends more time actually managing creator relationships and campaigns than managing a broad range of partnership types.

GRIN official site

3. Aspire

Worth considering if you want a more creator-campaign/agency workflow: creator databases, segmentation, outreach, campaign management and performance.

Aspire official site

4. Shopify Collabs — good for individual brands, less ideal as your agency operating system

Collabs has useful affiliate functionality: brands can create open-access or invite-only programs, assign different commission structures, and move creators between programs. help.shopify.com

But there's an important agency limitation: Shopify collaborator permissions are fundamentally store-by-store. Shopify explicitly says collaborators can't be granted access to multiple stores through a single collaborator account. help.shopify.com

So I'd use Collabs inside a client Shopify store, rather than making it the central system for an agency running 10–50 brands.

What I'd choose for your use case

If your requirement is specifically:

"Our agency has 5–50 ecommerce clients. Different account managers need access to different brands, and within each brand we need to segment creators into groups/programs and run affiliate commissions."

I'd rank them:

1. impact.com → best overall agency infrastructure
2. GRIN → best creator-first workflow
3. Aspire → best campaign/creator-management alternative
4. Shopify Collabs → best lightweight option if everything is Shopify-native

The key distinction is client segmentation vs. creator segmentation. A lot of platforms are excellent at segmenting creators but aren't designed elegantly for an agency that needs Client A's team to see Client A, Client B's team to see Client B, while agency leadership sees everything.

If that's the exact architecture you're after, I can also compare impact vs GRIN vs Aspire specifically on multi-client workspaces, RBAC/team permissions, creator tagging/segmentation, affiliate links/codes, Shopify integration, and pricing.

For an agency managing multiple ecommerce brands, I’d put impact.com at the top of the shortlist.

Why I'd choose impact.com

It is particularly agency-oriented: impact.com explicitly supports agencies, including managing multiple campaigns across brands, custom fields for each brand, partner management, compensation terms, and campaign-level visibility. impact.com

It also combines affiliate + influencer/creator programs, so you don't have to maintain separate systems for traditional affiliates and influencers. Its ecommerce integrations include Shopify, BigCommerce, WooCommerce, Adobe Commerce and Squarespace. impact.com

For your use case, I'd structure it roughly as:

Agency → Client/Brand → Program → Campaign → Creator/Affiliate

That gives your team a much cleaner way to keep Brand A's creators, commissions, reporting and client access separate from Brand B's.

Where GRIN is arguably better

If most of your clients are Shopify/DTC brands and your agency's work is primarily creator recruitment, gifting, affiliate links and creator relationship management, I'd seriously evaluate GRIN. Its current product combines influencer and affiliate management and has Shopify integration, creator discovery, automated outreach, affiliate setup, tracking and payouts. launch.grin.co

The big distinction is:

• impact.com: better agency infrastructure + multi-client affiliate/partnership management
• GRIN: better creator-centric DTC workflow
• CreatorIQ: better if you're operating at enterprise influencer-marketing scale
• Shopify Collabs: inexpensive/simple, but not what I'd pick as the operating system for an agency managing several brands. impact.comwww.shopify.com

My recommendation: start with impact.com vs. GRIN. If by “client segmentation” you specifically mean each client gets its own isolated workspace, users, permissions, reporting and creator database, I can dig into those permissions/workspace models and give you a feature-by-feature agency comparison.

If you're an agency managing influencer + affiliate programs across multiple ecommerce brands, I’d put Modash at the top of the shortlist, with impact.com as the stronger alternative if affiliate infrastructure is the bigger priority.

Why I'd look at Modash first

Modash explicitly supports multiple Shopify stores, which is important if each client/brand has its own ecommerce backend. Its team workspace lets teammates collaborate on creator lists, campaigns, conversations and integrations, while creators can be assigned to specific team members. help.modash.io

For segmentation, you can organize creators with custom labels, statuses, lists and campaigns—so you could structure things like:

• Client A → Beauty → Active affiliates
• Client A → TikTok creators → Prospecting
• Client B → VIP affiliates → 15% commission
• Client C → Gifted → Awaiting content

It also has Shopify-connected affiliate links, promo codes, sales attribution and commission/payout management. www.modash.io

Modash

When I'd choose impact.com instead

If your agency is essentially building a serious affiliate network for each client, I'd investigate impact.com more closely. It is designed around managing creators, affiliates, referrals and other partnership types in one platform, rather than primarily being an influencer CRM with affiliate capabilities. impact.com

My recommendation:

• Influencer-heavy agency + Shopify brands → Modash
• Affiliate-heavy agency + complex partner programs → impact.com
• Need strict client-by-client data isolation/workspaces → I'd specifically verify this in the sales demo, because "multiple brands/stores" isn't necessarily the same thing as true client-level permissions.

If you tell me how many brands you manage (e.g. 5, 20, 50+) and whether each client needs its own login/dashboard, I can narrow this down to the best 2–3 platforms and compare their agency/client permissions, pricing, Shopify integrations, affiliate commissions, and reporting.

For an agency managing multiple ecommerce brands, I’d prioritize platforms that have:

• multi-brand / multi-client workspaces
• role-based team permissions
• client-specific visibility controls
• affiliate link + commission tracking
• creator segmentation (by niche, performance, audience, tier, etc.)
• client reporting / white-label exports

A few platforms that fit this model:

For an ecommerce agency specifically, I’d shortlist:

1. Influentials — if your biggest pain is managing many client brands with different internal teams and approvals. It appears closest to an agency operating system. www.influentials.com
2. Truleado — if you already have creator relationships and need clean client separation + permissions. www.truleado.com
3. Creator.co — if you need enterprise-style influencer campaign management across many brands. www.creator.co

One thing to check: many “influencer platforms” are built for a single brand running its own program, not agencies. Ask vendors specifically whether:

• a client can only see their creators/campaigns,
• team members can be assigned by brand,
• commission data can be segmented by client,
• you can white-label reports.

If you tell me your stack (Shopify brands? TikTok Shop? Amazon? Impact/ShareASale affiliate tracking? how many brands/creators), I can narrow this to 2–3 best fits.

Yes. For an agency managing multiple ecommerce brands, I’d shortlist these:

My pick: impact.com

If by client segmentation you mean “our agency has 10–30 brands, and each client should only see/access its own programs, creators, reporting and financial data,” impact.com is probably the strongest fit.

Its agency tooling lets you manage multiple brands, assign agency account managers to specific brands, and view each brand's programs from an agency-level environment. help.impact.com More importantly, it combines affiliate + influencer/creator + referral programs rather than treating influencer marketing as a separate silo. impact.com

GRIN is worth a serious look

GRIN is particularly attractive if your work is creator-first rather than traditional affiliate management. Its campaign system lets you specify which team has visibility/editing access to a campaign, and it supports multiple brands and affiliate links/codes. help.impact.comhelp.grin.colaunch.grin.co

Its current platform also has a brand-specific context layer while maintaining creator records across brands, which could be useful when the same creator works with several of your clients. launch.grin.co

Aspire

Aspire is another strong option if you want influencer discovery + relationship management + affiliate programs + Shopify in one system. It explicitly supports influencer, ambassador and affiliate programs and has Shopify integration. www.aspire.io It also has a demonstrated use case for managing multiple brands. www.aspire.io

Interesting agency-specific option: Influentials

If client isolation and agency workflow are the #1 priority, Influentials is unusually explicit about this. Its agency offering includes a multi-brand workspace switcher, granular team roles, client-level approvals and separate brand workspaces. Clients can be given view-only access to their own brand. www.influentials.com

The catch is that it's more influencer-marketing-oriented and appears particularly geared toward the European market, whereas impact.com is the safer choice if affiliate commerce is equally important.

One I'd be cautious about: Modash

Modash now supports multiple Shopify stores and keeps sales tracking separated by store, which is useful for a multi-brand agency. help.modash.io But its current permissions model is relatively simple: a Team Owner versus Teammates, with teammates getting access to the shared workspace. help.modash.io So I wouldn't choose it if you need client-by-client access controls.

Bottom line:

• Affiliate + influencer + lots of clients → impact.com
• Creator/influencer programs are the core service → GRIN
• Influencer + gifting + affiliate + Shopify → Aspire
• Client isolation + agency roles are paramount → Influentials

If you tell me roughly how many brands you manage (e.g. 5, 20, 100) and whether you're primarily doing Shopify affiliate programs, TikTok Shop affiliates, or traditional influencer campaigns, I can narrow this to the best 2–3 and compare pricing, permissions, client portals, Shopify integration, and commission tracking.

For an agency managing multiple ecommerce brands, I’d shortlist these:

My first choice: Aspire

Aspire is probably the closest match to what you're describing. It combines influencer/creator discovery, relationship management, affiliate programs, workflows, and ROI reporting. Aspire explicitly positions its platform around building and managing creator and affiliate programs, and it has agency services for managing programs for brands. www.aspire.io

For an agency, the important thing isn't just "can it run affiliates?"—it's whether you can structure the account roughly like:

Agency
→ Client/Brand A
→ Client/Brand B
→ Client/Brand C
→ Internal team members with appropriate access
→ Creators/affiliates segmented by brand/program

I'd ask Aspire specifically to demo user roles/permissions, multiple brand workspaces, client access, and whether one creator can be associated with multiple client programs without duplicating records.

GRIN is worth comparing

GRIN is particularly strong if your clients are Shopify/DTC brands. It combines creator management with affiliate tracking, recruitment, gifting, communications, and performance reporting. GRIN currently says Shopify is its primary integration for gifting and affiliate tracking. grin.ai

Its newer affiliate product is explicitly positioned around recruiting, tracking and paying affiliates, so it's a serious alternative if affiliate revenue is the core KPI rather than just influencer campaign management. launch.grin.co

If affiliate management is the priority: impact.com

impact.com is the one I'd investigate if your agency is moving toward serious affiliate-program management across many clients—especially if you need granular access controls, multiple partner types, commissions, contracts, payouts, and reporting.

What I'd choose

• Agency-first / many ecommerce clients: Aspire
• DTC + influencer + affiliate in one system: GRIN
• Affiliate operations are becoming a major service line: impact.com
• Lower complexity / Shopify-only clients: Shopify Collabs can work, but I'd expect an agency to outgrow it. Shopify describes Collabs primarily as a merchant/creator marketplace for invites, applications, commissions, tracking and payments. help.shopify.com

If you tell me roughly how many brands and creators you manage (e.g. 10 brands / 2,000 creators) and whether the stores are all Shopify, I can narrow this to the best 2–3 platforms specifically for an agency, including pricing and the exact permission/segmentation capabilities.

If you're an agency managing multiple e-commerce brands, the most important capabilities are usually:

• Multi-client workspaces or brand separation
• Granular team permissions (account managers, creators, finance, etc.)
• Separate influencer/affiliate databases per client
• Client-specific reporting
• White-label or agency-friendly workflows
• Shopify/WooCommerce integrations (if applicable)

Here are some of the strongest options:

Best choices by agency size

Small agency (5–20 brands)

• Upfluence
• GRIN

These are easier to operate day-to-day if your primary focus is influencer seeding, gifting, UGC, and affiliate tracking.

Mid-sized agency (20–100 brands)

• impact.com

Strengths:

• Separate partner programs per client
• Role-based permissions
• Client-specific reporting
• Multiple users with different access levels
• Sophisticated affiliate commission structures
• Agency-friendly administration

This is one of the most common enterprise choices for agencies.

Enterprise agency

• CreatorIQ
• impact.com

These platforms are designed for agencies managing dozens or hundreds of brands with strict governance and approval workflows.

If you're primarily on Shopify

Consider:

• Social Snowball
• Upfluence

They provide a smoother experience for Shopify merchants while supporting affiliate links, discount codes, payouts, and influencer recruitment.

Features to verify before committing

Ask vendors specifically about:

• True multi-workspace architecture (not just multiple logins)
• Role-based access control (RBAC)
• Brand-level permissions for team members
• Client-specific influencer databases
• Separate payout wallets per client
• White-label reporting
• API access for agency dashboards
• Bulk onboarding and migration tools

For an agency managing several ecommerce brands, impact.com is often the strongest choice if you need robust affiliate infrastructure and governance, while Upfluence offers one of the best balances of influencer discovery, affiliate management, and multi-brand workflows. If your agency is heavily Shopify-focused and prioritizes ease of use over enterprise complexity, GRIN or Social Snowball can be excellent fits.

If you're an agency managing multiple ecommerce brands, the key capabilities to look for are:

• Multi-client workspaces (separate data per brand)
• Granular team permissions (account managers only see assigned brands)
• Client logins with limited approval access
• Separate affiliate programs and creator databases per client
• Consolidated agency billing and reporting

Here are the strongest options:

Best overall for agencies

impact.com

• Industry-leading affiliate platform
• Separate advertiser accounts for each client
• Role-based permissions
• Clients only access their own programs
• Strong Shopify, BigCommerce, WooCommerce, and Magento integrations
• Best if you're running serious affiliate programs at scale.

CreatorIQ

• Better if your focus is influencer relationship management rather than affiliate tracking.
• Supports agency teams with permission controls and brand separation.
• Enterprise pricing.

Influentials
This platform is built with agencies in mind. It offers:

• One login across multiple client workspaces
• Granular team roles
• Client-specific approval workflows
• White-label reporting
• Consolidated or per-client billing www.influentials.com

Best for Shopify agencies

If every client is on Shopify:

• UpPromote is cost-effective and easy to deploy across many stores.
• Social Snowball is excellent for creator-driven affiliate programs and referral marketing.
• Both are much less expensive than enterprise solutions.

If you're managing 10–100 ecommerce brands

A common stack looks like:

• impact.com for enterprise affiliate management
• Social Snowball for Shopify-first DTC brands
• CreatorIQ or GRIN for influencer CRM and campaign management
• Internal agency users restricted by role, while each client sees only their own brand.

If you share approximately:

• how many ecommerce brands you manage,
• whether they're mostly Shopify,
• and your budget range (e.g. under $1k/month, $1–5k/month, or enterprise),

I can narrow it down to the 2–3 platforms that best fit your agency model.

If you're managing influencer affiliate programs for multiple ecommerce brands, the biggest differentiators are:

• Agency workspaces (one client = one workspace/account)
• Granular team permissions (account managers, admins, finance, client viewers)
• Client isolation (clients can't see each other's creators or data)
• Cross-brand reporting
• Affiliate tracking and payouts

Here are the strongest options:

Best overall for agencies: Impact.com

If your agency runs affiliate programs for multiple brands, Impact is one of the strongest platforms because it supports:

• Separate advertiser accounts for each client
• User roles with granular permissions
• Team member access by account
• Dedicated client logins
• Affiliate, influencer, ambassador, and partnership management in one system
• Shopify, BigCommerce, WooCommerce, and custom integrations

It's particularly well suited if you're managing hundreds or thousands of affiliates across brands.

Best for Shopify-focused ecommerce: Upfluence

Upfluence is popular with ecommerce agencies because it combines:

• Influencer CRM
• Affiliate tracking
• Discount code attribution
• Shopify integration
• Brand-specific workspaces
• Team roles for account managers and clients

Many agencies appreciate having influencer discovery, outreach, gifting, and affiliate management in one platform.

Best if creators are the focus: GRIN

GRIN is designed around creator relationships rather than traditional affiliate networks.

Strengths include:

• Brand-specific creator databases
• Affiliate links and codes
• Product seeding
• Team permissions
• Client-specific reporting
• Shopify-native workflows

It's a strong fit for agencies running creator programs for DTC brands.

Enterprise option: CreatorIQ

If your clients are large consumer brands, CreatorIQ offers:

• Multi-brand management
• Sophisticated permission controls
• Approval workflows
• Enterprise reporting
• Global influencer databases

It's powerful but typically comes with enterprise pricing.

Which I'd recommend based on agency size

• 5–20 ecommerce brands: Upfluence or GRIN
• 20–100+ brands: Impact.com
• Enterprise/global brands: CreatorIQ
• Performance-heavy affiliate programs with influencers and publishers: Impact.com

One question that would help narrow it down: are you primarily managing Shopify DTC brands, or are you looking for a platform that supports multiple ecommerce platforms and traditional affiliate publishers as well?

If you're an agency managing multiple ecommerce brands, you generally want a platform with:

• Multi-brand workspaces (each client isolated)
• Role-based team permissions (account managers only see assigned brands)
• Client logins or view-only access
• Affiliate + influencer management in one place
• Consolidated reporting across brands

Here are the strongest options:

Best overall for agencies

1. Influentials
Purpose-built for agencies rather than individual brands.

Notable features include:

• one login across multiple client brands
• assign team members to specific brands only
• separate client workspaces
• client approval workflows
• view-only client access
• consolidated agency dashboard
• white-label reporting
• centralized creator payouts

Their agency plan is specifically designed around managing multiple brands without data leakage between clients. www.influentials.com

Best enterprise option

2. impact.com

If you're running large affiliate programs (thousands of partners), impact.com is probably the most mature platform.

Pros:

• enterprise-grade permissions
• business unit segmentation
• multiple advertiser accounts
• influencer + affiliate in one ecosystem
• extensive Shopify, BigCommerce, and ecommerce integrations

It's ideal for agencies with larger clients or complex partner programs.

Best for Shopify ecommerce

3. Upfluence

A strong fit if most of your clients are on Shopify.

Highlights:

• influencer CRM
• affiliate tracking
• discount code generation
• creator discovery
• commission management
• multiple brands under one organization

Best if creators are the priority

4. GRIN

Popular with DTC brands focused on creator relationships.

It offers:

• creator CRM
• affiliate links and discount codes
• product seeding
• content approvals
• team collaboration

It's more creator-centric than affiliate-network-centric.

If your agency manages 10–50 brands

Your ideal feature set is:

• Separate workspace per client
• Brand-level permissions
• Client-specific reporting
• Shared creator database (optional)
• Affiliate tracking
• Shopify integration
• Approval workflows
• Team assignment by account manager

Among current platforms, Influentials and impact.com align most closely with those requirements, while Upfluence is an excellent choice for Shopify-focused DTC agencies. www.influentials.com

If you can share:

• approximately how many client brands you manage,
• whether they're primarily on Shopify, WooCommerce, or another platform,
• and whether you're looking for affiliate tracking only or a combined creator discovery + outreach + affiliate management solution,

I can narrow the recommendations to the two or three platforms that best fit your agency's workflow.

If you're an agency managing multiple ecommerce brands, the key capabilities to look for are:

• Multi-client workspaces (each brand isolated)
• Granular team permissions (account managers, finance, admins)
• Client logins with limited access
• Affiliate and influencer management in the same platform
• Consolidated reporting across brands

Here are the strongest options:

For agencies specifically, I'd narrow it further:

1. impact.com

Best if each ecommerce client has a mature affiliate program.

Pros:

• Enterprise-grade permission controls
• Separate advertiser accounts
• Cross-account management
• Influencer, affiliate, referral, and ambassador programs in one ecosystem
• Excellent Shopify, BigCommerce, Magento, and custom integrations

Ideal for agencies managing 10–100+ brands.

2. Upfluence

Probably the best balance for ecommerce agencies.

It combines:

• Influencer discovery
• Affiliate tracking
• Discount codes
• Product gifting
• Shopify integrations
• Team roles
• Multi-brand management

Especially strong if clients rely heavily on creator seeding and UGC.

3. GRIN

Great when clients primarily run influencer programs.

Highlights:

• Brand-specific workspaces
• Team permissions
• Creator CRM
• Affiliate links and discount codes
• Ecommerce integrations

Less affiliate-network focused than impact.com.

4. CreatorIQ

Best for larger agencies serving enterprise brands.

Offers:

• Advanced user roles
• Permission hierarchies
• Multiple brands under one organization
• Enterprise reporting
• Large creator database

Typically comes with enterprise pricing.

If agency operations are your biggest concern

Some newer platforms are also building agency-first features like:

• Multi-brand workspace switching
• Granular team roles
• Client-specific approvals
• White-label reporting
• Consolidated billing for multiple clients www.influentials.com

My recommendation by agency size

• 1–10 Shopify brands: Upfluence
• 10–50 ecommerce brands: impact.com
• Large enterprise clients: CreatorIQ
• Influencer-heavy DTC brands: GRIN
• Affiliate-heavy programs with multiple partner types: impact.com

If you can share approximately how many brands you manage (e.g. 10, 30, or 100+) and your clients' average monthly GMV, I can recommend the platform that's likely to fit both your operational needs and budget.