ChatGPT answers, unedited

If your agency needs to manage multiple clients’ email and SMS campaigns from one dashboard, look for a platform with:

• Separate client workspaces/accounts
• Agency-level login and permissions
• White-label reporting or branding
• Email + SMS automation
• Client-level analytics
• Templates you can reuse across accounts

Some options to evaluate:

A quick way to choose:

• You run a traditional digital marketing agency (SEO, ads, websites, CRM): HighLevel is commonly used because it combines CRM, automation, SMS, email, and client accounts.
• You mainly manage newsletters and lifecycle email: Zoho Campaigns or similar email platforms may be simpler.
• You sell SMS/email as a managed service: Messaro, DailyStory, or Verastly are more directly built around multi-client messaging operations. DailyStory Messaro
• You need clients to see branded dashboards: prioritize white-label and client portal features.

If you tell me:

1. how many clients you manage (e.g., 5, 50, 500),
2. whether you need CRM/funnels or just email + SMS, and
3. whether you want white-label under your agency brand,

I can narrow this to the best 2–3 choices.

If your agency manages multiple clients’ email + SMS campaigns from one place, I’d look first at gohighlevel.com.

Why HighLevel fits agencies

• One agency login, multiple client sub-accounts — each client’s contacts, campaigns, workflows, and data stay separated, while your team can switch between accounts. GoHighLevel HighLevel Support Portal
• Email + SMS in the same platform — you can send bulk SMS, email, and automated sequences/workflows. HighLevel Support Portal
• Agency-level management — permissions and settings can be managed across client accounts. HighLevel Support Portal
• Client reporting — dashboards now have dedicated email and SMS reporting widgets, including delivery, engagement, volume, and campaign-level metrics. HighLevel Support Portal HighLevel Support Portal
• Automation — you can build workflows once and deploy/adapt them across clients. GoHighLevel
• White-label option — your clients can experience the platform under your agency's branding rather than HighLevel's. GoHighLevel

Other options worth considering

For an agency specifically wanting CRM + email + SMS + automations + client accounts + reporting in one system, HighLevel is the most directly aligned with that use case based on its current agency feature set. GoHighLevel

If you tell me roughly how many clients you manage (e.g. 5, 20, 100+) and whether you need white-labeling, I can narrow it down to 2–3 platforms and compare their current pricing and per-client economics.

For an agency managing multiple clients' email + SMS campaigns from one dashboard, HighLevel (GoHighLevel) is specifically designed for that use case.

Why it fits agencies

• Separate client accounts: Each client gets an isolated sub-account, while your team manages them from one agency dashboard. GoHighLevel HighLevel Support Portal
• Email + SMS: You can build automated email/SMS sequences, follow-ups, and workflows for each client. GoHighLevel
• Unified conversations: Client SMS, email, and other supported conversations can be managed in one inbox. GoHighLevel
• Reusable campaigns: You can clone workflows/funnels and deploy standardized setups across clients. GoHighLevel
• Team permissions: You can restrict employees to specific client accounts and control what they can access. HighLevel Support Portal HighLevel Support Portal
• White-label option: Higher-tier plans allow you to brand the platform as your own and potentially resell it to clients. GoHighLevel

gohighlevel.com

Pricing structure

HighLevel currently lists:

• $97/month: up to 3 sub-accounts
• $297/month: unlimited sub-accounts
• $497/month: adds SaaS/agency-oriented features such as automated sub-account creation and email/phone rebilling with markup. GoHighLevel

Email/SMS usage can have additional usage-based charges, so the subscription price isn't necessarily your total messaging cost. HighLevel Support Portal

If you're an agency with, say, 5–50+ clients, HighLevel is worth putting at the top of your shortlist. If you tell me roughly how many clients you have, monthly SMS/email volume, and whether you want clients to log in themselves, I can compare HighLevel with HubSpot, Klaviyo, ActiveCampaign, and similar platforms for your setup.

If you're an agency managing email + SMS campaigns for multiple clients, my first recommendation is HighLevel (GoHighLevel).

gohighlevel.com

Why HighLevel fits agencies

• One agency dashboard: Create separate sub-accounts for each client, while managing them from one agency login. HighLevel Support Portal HighLevel Support Portal
• Email + SMS: Build automated email/SMS campaigns and workflows for each client. GoHighLevel GoHighLevel
• Unified conversations: Client SMS, email, social messages, etc. can be managed through a centralized inbox. GoHighLevel
• Client separation: Each client's contacts, campaigns and data stay in their own sub-account.
• Team permissions: You can give employees access to only the client accounts they actually manage. HighLevel Support Portal
• White-labeling: Higher-tier agency plans let you brand the platform as your own and offer it to clients under your agency brand. GoHighLevel
• Reporting: You can schedule reports for individual client sub-accounts, including email and SMS metrics. HighLevel Support Portal

Other options worth considering

For example, Vendasta offers a white-labeled client portal and centralized customer communications, while systeme.io specifically supports separate client subaccounts from one dashboard. Vendasta Systeme.io

If your core business is “we run email/SMS marketing for 10–100+ clients,” I'd pick HighLevel. It is particularly well suited if you eventually want to charge clients a monthly management/software fee and give them their own branded portal.

If you tell me roughly how many clients you manage and whether you need email only, SMS only, or both, I can narrow it down to the best 2–3 platforms and compare pricing, automation, white-labeling, and per-client costs.

If you're a marketing agency managing multiple clients, my top recommendation is HighLevel (GoHighLevel).

gohighlevel.com

Why it fits an agency

• One agency dashboard: Create separate sub-accounts for each client and switch between them from the agency view. GoHighLevel HighLevel Support Portal
• Email + SMS campaigns: Run bulk SMS, email campaigns, automated follow-ups, and drip sequences. HighLevel Support Portal
• Automation: Build a workflow once and deploy similar campaigns across multiple clients. GoHighLevel
• Client separation: Each client's contacts, campaigns, conversations, and data stay in their own sub-account. HighLevel Support Portal
• Unified inbox: Email, SMS and other client conversations can be managed from one platform. GoHighLevel
• White-labeling: Higher-tier agency plans let you brand the platform with your agency's logo/domain, useful if you want clients to perceive it as your own software. GoHighLevel
• Agency-wide administration: HighLevel has added centralized controls for managing email services across client sub-accounts. HighLevel Support Portal

HighLevel vs. HubSpot

Bottom line: If your business is specifically an agency where you might manage 10, 20, 50+ client businesses, I'd start with HighLevel. Its sub-account architecture, SMS/email automation, unified conversations, and agency/white-label features are designed around that exact model. GoHighLevel GoHighLevel

If you tell me how many clients you manage and whether you need white-labeling, I can also narrow down the best HighLevel plan and compare it with HubSpot, Mailchimp, Klaviyo, and GoHighLevel for your agency.

If your agency manages multiple clients’ email + SMS campaigns from one dashboard, you’ll want a platform with multi-client workspaces/sub-accounts, permissions, reporting, automation, and ideally white-label options. Some strong options:

My shortlist by agency type

• You run a lead-gen / local marketing agency: HighLevel is usually the closest fit because it combines CRM + SMS + email + automation + client accounts.
• You mainly sell email/SMS marketing as a service: DailyStory or Messaro are more purpose-built around campaign management across clients. DailyStory Messaro
• You need polished email marketing and reporting: Campaign Monitor or Zoho Campaigns are good fits. Campaign Monitor Zoho
• You need clients to see your branded portal: Look for white-label/reseller features (HighLevel, Campaign Monitor, Transpond, some agency-focused platforms). Campaign Monitor Transpond

A few questions would narrow this down:

1. How many clients are you managing (5, 50, 500+)?
2. Do you need two-way SMS conversations (sales/support), or only broadcast campaigns?
3. Do clients need their own login/dashboard, or is it internal-only for your agency team?

If your agency wants to manage multiple clients’ email + SMS campaigns from one agency platform, my first choice would be HighLevel (GoHighLevel).

gohighlevel.com

Why it fits agencies

• Separate client accounts: Each client can have its own sub-account, contacts, pipelines, campaigns, and automations while your agency manages them centrally. HighLevel Support Portal GoHighLevel
• Email + SMS: You can run email campaigns, workflows, and bulk SMS from the platform. HighLevel Support Portal
• Centralized reporting: HighLevel now has an all-in-one email statistics dashboard covering campaigns, workflows, and bulk sends. HighLevel Support Portal
• Automation: Build reusable email/SMS workflows and deploy similar systems across clients. GoHighLevel
• Agency permissions: Your team can be given access to all clients or only selected client accounts. HighLevel Support Portal
• White-labeling: If you want to sell the software/service under your agency's own brand, HighLevel supports a branded client portal. GoHighLevel
• Bulk account management: HighLevel has agency-level tools for managing multiple sub-accounts at once. HighLevel Support Portal

Other options worth considering

If your core requirement is “10–100+ clients, each with their own email/SMS campaigns, but my team manages everything from one place,” I'd strongly lean HighLevel. Its sub-account architecture is specifically designed around this model. GoHighLevel HighLevel Support Portal

If you tell me roughly how many clients you have and whether you need white-labeling, I can narrow it down to the best 2–3 platforms and compare pricing, SMS costs, email limits, automation, and client reporting.

For an agency managing multiple clients' email + SMS campaigns from one dashboard, you’ll want a platform with multi-client workspaces/subaccounts, permissions, client reporting, automation, and ideally white-label options.

Here are some strong options:

My shortlist by agency type

• You run a lead-gen / local business agency: HighLevel is usually the first one to evaluate because it combines CRM + SMS + email + automation.
• You mainly deliver email and SMS campaigns for clients: DailyStory or Messaro are more focused fits. DailyStory Messaro
• You need enterprise-style email automation: ActiveCampaign is worth considering.
• You need simple multi-client email management: Zoho Campaigns may be enough. Zoho

Key features I’d compare before choosing:

• Client subaccounts/workspaces
• White-label dashboard (if clients see the platform)
• Separate billing per client
• SMS compliance tools (A2P 10DLC in the U.S.)
• Client reporting dashboards
• Template libraries and reusable automations
• Team permissions

If you tell me your agency size (e.g., 5 clients vs 100+ clients) and whether you need white-label/reselling, I can narrow this to the best 2–3 options.

If your agency manages multiple clients’ email and SMS campaigns from one dashboard, you’ll want a platform with:

• Client workspaces/subaccounts
• Role-based access (your team vs. each client)
• Email + SMS automation
• Client reporting dashboards
• White-label options (if you resell marketing services)
• Shared templates/workflows

Here are some strong options:

My shortlist by agency type

• You run lead generation for local businesses: GoHighLevel is usually the first one agencies evaluate.
• You mainly provide email marketing: ActiveCampaign or Zoho Campaigns.
• You sell SMS + email as a managed service: DailyStory or Messaro.
• You need enterprise reporting and CRM: HubSpot.

A few questions would narrow it down:

1. How many clients are you managing (5, 20, 100+)?
2. Do you need white-labeling so clients see your agency brand?
3. Are your campaigns mostly lead nurturing, newsletters, ecommerce, or appointment reminders?

If you mean one agency login where your team can manage separate email + SMS campaigns for many clients, my top recommendation is gohighlevel.com.

Why HighLevel fits agencies

• One agency dashboard: Each client gets a separate sub-account, while your team can switch between clients from the agency view. GoHighLevel HighLevel Support Portal
• Email + SMS in the same platform: You can build email campaigns, bulk SMS, automated follow-ups, and multi-step workflows. HighLevel Support Portal
• Automation: Build a workflow once and replicate it across client accounts—useful for lead nurturing, appointment reminders, reactivation, etc. GoHighLevel
• White labeling: You can put your agency's branding/domain on the platform so clients can log in under your brand. GoHighLevel
• Client separation: Each sub-account keeps its contacts and data separate, which is important when managing multiple businesses. GoHighLevel
• Agency-oriented pricing: The current Unlimited tier is listed at $297/month and includes unlimited sub-accounts; the Pro tier is $497/month and adds SaaS/white-label capabilities. GoHighLevel GoHighLevel

How I'd compare the main options

One important distinction: AgencyAnalytics is excellent for aggregating and reporting on multiple clients, but it isn't the tool I'd choose as the actual email/SMS campaign engine. HighLevel is designed to actually run those campaigns. AgencyAnalytics AgencyAnalytics

If your agency is selling "we manage your email + SMS marketing" as a service, I'd start with HighLevel. It is particularly strong if you want each client to have their own CRM, contacts, automations, inbox, campaigns, and reporting while your agency controls everything centrally.

If you tell me how many clients you have (e.g. 10, 50, 100+) and whether you want clients to have their own logins, I can narrow this down to the best 2–3 platforms and explain the actual cost structure.

For an agency managing multiple clients' email + SMS campaigns from one place, my top recommendation is HighLevel.

gohighlevel.com

Why HighLevel fits agencies

• One agency dashboard: Create separate client sub-accounts while managing them from your agency view. HighLevel Support Portal HighLevel Support Portal
• Email + SMS: Run bulk email/SMS campaigns, automated follow-ups, drip sequences, and workflows. HighLevel Support Portal GoHighLevel
• Unified inbox: Client conversations from SMS, email and other channels can be managed centrally. GoHighLevel
• Automation: Build workflows once and deploy/reuse them across clients. GoHighLevel
• Client separation: Each client gets their own sub-account, contacts, campaigns and data. GoHighLevel
• White-labeling: Higher-tier agency plans can let you brand the platform with your own logo/domain, so clients can experience it as your agency's software. GoHighLevel
• Agency-level management: HighLevel now provides centralized controls for email services and bulk sub-account management. HighLevel Support Portal HighLevel Support Portal

Other options worth considering

If your agency sells lead generation, automated follow-up, appointment booking, CRM, email and SMS as a package, I'd strongly lean toward HighLevel. It is designed around the agency/sub-account model rather than simply being an email platform.

If you tell me roughly how many clients you manage (e.g. 10, 50, 200+) and whether you need white-labeling, I can narrow it down to the best 2–3 platforms and compare their current pricing.

If your agency manages multiple clients and needs both email + SMS campaigns from an agency-level dashboard, my top pick is HighLevel (GoHighLevel).

Best options

Why I'd choose HighLevel: it uses separate client sub-accounts under your agency, so you can manage users and permissions across clients from the agency level. HighLevel Support Portal HighLevel Support Portal It supports email and bulk SMS campaigns within the platform, including personalized SMS at scale. HighLevel Support Portal

It also has agency-level controls for email services and can manage settings across multiple client accounts, including bulk operations. HighLevel Support Portal HighLevel Support Portal

gohighlevel.com

ActiveCampaign is the better alternative if your agency's main strength is sophisticated email automation. Its Partner Portal is specifically designed for agencies/resellers managing multiple client accounts. ActiveCampaign Help Center ActiveCampaign Help Center

activecampaign.com

Bottom line: If you're building an agency where clients each get their own CRM, campaigns, automations, SMS, reporting, and potentially a white-labeled experience, I'd start with HighLevel.

If you tell me roughly how many clients you manage (e.g. 10, 50, 200) and whether you need white-labeling, I can narrow it down to the best 2–3 platforms and compare their costs.

If your agency wants to manage multiple clients’ email + SMS campaigns from one dashboard, my first choice would be HighLevel (GoHighLevel).

Best fit: HighLevel

gohighlevel.com

It is specifically designed around the agency model:

• Separate client accounts: Each client gets a sub-account, while your team manages them from the agency dashboard. HighLevel Support Portal GoHighLevel
• Email campaigns: Email marketing, automation, workflows, and bulk communications are built in.
• SMS campaigns: You can send personalized bulk SMS and automate text follow-ups from the same platform. HighLevel Support Portal
• Automations: Build sequences such as Lead → Email → SMS → Appointment → Follow-up.
• Client reporting: Keep each client's contacts, campaigns, conversations, and reporting separated.
• White labeling: Higher-tier agency plans let you put your agency's branding, domain, and even pricing in front of clients. GoHighLevel HighLevel Support Portal
• Client billing/rebilling: Agency plans support rebilling email/phone usage, and the Pro tier adds SaaS functionality. HighLevel Support Portal GoHighLevel

Current listed pricing is roughly $97/mo Starter, $297/mo Unlimited, and $497/mo Agency Pro, although features and pricing can change. The $297 plan is particularly interesting for agencies because it includes unlimited sub-accounts; Pro adds SaaS mode and markup/rebilling capabilities. GoHighLevel

Other options worth considering

For a typical marketing agency, I'd choose HighLevel because it isn't just an email/SMS sender—it gives you a separate workspace for every client while keeping your agency's operations centralized. HighLevel explicitly positions its platform around replacing separate CRM, email, SMS, funnel, scheduling, and automation tools. GoHighLevel

If you tell me how many clients you manage (e.g. 10, 50, 100+) and whether you need white-labeling, I can narrow it down to the best 2–3 platforms and compare their actual costs per client.

If your agency needs one platform to manage multiple clients’ email + SMS campaigns, my top pick is HighLevel.

Best options

• gohighlevel.com — Best overall for agencies

• Separate sub-accounts for each client
• Manage email, SMS, CRM, automations, funnels, calendars, and lead follow-up
• Switch between client accounts from the agency dashboard
• Clone campaigns/workflows across clients
• White-label the platform so clients can see your agency's branding
• Supports bulk and automated SMS campaigns alongside email. GoHighLevel GoHighLevel HighLevel Support Portal
• activecampaign.com — Best for sophisticated email automation

• Strong segmentation and customer journeys
• Its Partner Portal is specifically designed for agencies/resellers managing multiple client accounts
• Good choice if email automation is the core service, although HighLevel is more agency-centric for combining email + SMS + CRM. ActiveCampaign Help Center ActiveCampaign ActiveCampaign

What I'd choose

For most lead-gen/digital marketing agencies, I'd start with HighLevel. Its agency architecture is specifically built around separate client sub-accounts, centralized agency management, and white-labeling. GoHighLevel GoHighLevel

If you tell me how many clients you manage (e.g. 10, 50, 200+) and whether you need white-labeling, I can narrow this down to the best 3 platforms and their current pricing.

If your agency needs to manage multiple clients' email + SMS campaigns from one dashboard, my first choice would be gohighlevel.com.

Why HighLevel fits agencies

• Separate client accounts: Each client gets a sub-account with its own contacts, campaigns, automations, pipelines, etc., while your agency manages them from one login. HighLevel Support Portal HighLevel Support Portal
• Email + SMS: You can build email campaigns, SMS/MMS follow-ups, automated nurture sequences, and two-way conversations in the same platform. GoHighLevel GoHighLevel
• Automation: Build workflows once and replicate them across clients, which is particularly useful if you offer standardized lead-nurturing campaigns. GoHighLevel
• Client access: You can control which employees or clients can access which accounts and permissions. HighLevel Support Portal
• White-labeling: If you want clients to see your agency's branding rather than HighLevel's, higher-tier agency plans support white-label functionality. GoHighLevel
• Agency reporting: The agency dashboard lets you monitor customers, revenue, subscriptions, and other metrics across accounts. HighLevel Support Portal

The important distinction

If you only need email marketing, something like ActiveCampaign can be a cleaner, more specialized choice. But if your agency wants CRM + email + SMS + automation + funnels + client accounts + white-labeling, HighLevel is much closer to an agency operating system.

My recommendation: If you're managing 5+ clients and intend to run their campaigns for them, I'd seriously evaluate HighLevel first.

If you tell me how many clients you manage and whether you need white-labeling, I can compare HighLevel against HubSpot, ActiveCampaign, Klaviyo, and Vendasta and tell you which is the best fit.

If your agency manages multiple clients and wants email + SMS campaigns from one dashboard, my top recommendation is HighLevel (GoHighLevel).

gohighlevel.com

Why HighLevel fits agencies

• Separate client accounts: Each client gets its own isolated sub-account, while your agency manages them from one master dashboard. GoHighLevel
• Email + SMS: Run bulk campaigns, automated workflows, two-way SMS/MMS, and email follow-ups from the same platform. HighLevel Support Portal GoHighLevel
• Automation: Build a workflow once—e.g. lead comes in → email → wait 1 day → SMS → appointment reminder—and deploy variations across clients.
• Unified conversations: Your team can manage email, SMS, and other messaging channels through a unified inbox. GoHighLevel
• Agency reporting: The agency dashboard gives you visibility into customers, revenue, subscriptions, and account performance. HighLevel Support Portal
• White-label: If you want clients to see your agency's branding rather than HighLevel's, its higher agency tier supports white-labeling and SaaS-style resale. GoHighLevel

How I'd compare the main options

HubSpot does have multi-account management, including shared assets, workflows, and reporting across separate accounts, but HighLevel is more purpose-built around the agency model. HubSpot

For a typical marketing agency managing 10–100+ SMB clients, I'd start with HighLevel. The current official pricing shows $297/month for the Unlimited agency plan with unlimited sub-accounts, while Agency Pro is $497/month and adds SaaS-mode capabilities. GoHighLevel

If you tell me how many clients you manage, whether they're mostly local businesses or ecommerce, and whether you want to white-label the software, I can recommend the exact platform/plan and show you the best setup.

If your agency manages multiple clients and you want email + SMS campaigns from a centralized agency dashboard, my top recommendation is gohighlevel.com.

Why HighLevel fits agencies

• Separate client accounts: Each client gets a sub-account, while your team manages everything from the agency view. The $297/month Unlimited plan currently supports unlimited sub-accounts. GoHighLevel HighLevel Support Portal
• Email campaigns: Build broadcasts, automations, nurture sequences, and workflows for each client.
• SMS campaigns: Send individual or bulk SMS, schedule campaigns, and automate follow-ups. HighLevel Support Portal
• Unified conversations: Email, SMS and other channels can feed into a unified inbox for each client. GoHighLevel
• Reusable automations: Build a campaign/workflow once and deploy it across multiple client accounts. GoHighLevel
• Agency controls: Manage users and permissions across client accounts from the agency level. HighLevel Support Portal
• Client billing/rebilling: On higher plans, you can rebill email/phone usage to clients, including with markup on Agency Pro. HighLevel Support Portal
• White-label option: The agency plans offer branded/custom-domain capabilities, particularly useful if you want clients to perceive the platform as your agency's own. GoHighLevel

Current pricing

The current official pricing lists the $297 Unlimited plan as built for growing agencies and the $497 Agency Pro plan for agencies wanting SaaS mode and advanced agency functionality. GoHighLevel

My pick: Start with HighLevel Unlimited at $297/mo if you have more than 3 clients. It is particularly compelling if your business model is "we manage marketing campaigns for Client A, B, C, D..." rather than simply running marketing for your own company.

If you tell me roughly how many clients you manage (e.g. 10, 50, 100+), I can also compare HighLevel against HubSpot, Klaviyo, ActiveCampaign, and Mailchimp specifically for an agency setup and tell you which is likely to be cheapest/easiest.

For an agency managing multiple clients’ email and SMS campaigns from one dashboard, look for a platform with:

• Separate client workspaces/sub-accounts
• Shared campaign management
• Client-level reporting
• User permissions
• Automation workflows
• Optional white-label branding

Some strong options:

My shortlist by agency type

• Small/mid-size marketing agency: DailyStory or Messaro
• Agency selling SMS + email as a service: Messaro or Transpond
• Enterprise-style client management: Zoho Campaigns or FOXAF CRM
• White-label/reseller model: Transpond or FOXAF CRM

Before choosing, check whether you need:

1. True white-labeling (clients see your brand, not the software)
2. Separate billing per client
3. Client login portals
4. CRM integrations (HubSpot, Salesforce, GoHighLevel, etc.)
5. SMS compliance support (opt-ins, 10DLC registration, unsubscribe handling)

If you tell me your agency size (number of clients), whether you need white-labeling, and whether SMS is mainly marketing blasts, lead follow-up, or appointment reminders, I can narrow it to 2–3 best fits.

If your agency needs to manage multiple clients’ email + SMS campaigns from one place, my top recommendation is HighLevel (GoHighLevel).

gohighlevel.com

Why HighLevel fits agencies

• Separate client accounts: Each client gets their own sub-account, while your agency can manage them from one agency dashboard. HighLevel Support Portal GoHighLevel
• Email + SMS together: Build campaigns, automations, bulk SMS, email sequences, and follow-ups within the same platform. HighLevel Support Portal
• Reusable templates: Build a workflow once and deploy/clone it across multiple clients. GoHighLevel
• Unified conversations: Client SMS, email, and other messaging channels can be managed through a unified inbox. GoHighLevel
• White-label option: You can brand the client-facing platform with your agency's logo/domain and potentially resell it as your own service. HighLevel Support Portal GoHighLevel
• Agency permissions: Your employees can be given access across all clients, while individual clients can be restricted to their own account. HighLevel Support Portal

How I'd compare the main options

Bottom line: If you're an agency managing campaigns for, say, 10–100+ businesses, HighLevel is probably the first platform I'd evaluate. Its architecture is specifically built around agencies, client sub-accounts, automation, SMS/email, and white-labeling. GoHighLevel GoHighLevel

If you tell me how many clients you manage and whether you want clients to log in themselves, I can also recommend the best HighLevel plan/setup and explain how I'd structure the agency dashboard.

If your agency wants one dashboard to manage multiple clients’ email + SMS campaigns, my top recommendation is gohighlevel.com.

Best options

1. HighLevel — best overall for agencies

• Separate sub-accounts for each client, managed from one agency dashboard.
• Email marketing + SMS/MMS + unified conversations.
• Automations/workflows, CRM, funnels, calendars, reputation management, etc.
• You can clone workflows/funnels across clients.
• Strong white-label capability if you want clients to see your agency's branding.
• Built specifically around the agency model. GoHighLevel GoHighLevel
• activecampaign.com — best if email automation is the priority

• Has an agency/reseller program for managing many client accounts.
• Agency dashboard lets you administer client accounts.
• Supports email and cross-channel campaigns including SMS.
• You can create account snapshots and use them to spin up standardized client setups. ActiveCampaign ActiveCampaign Help Center ActiveCampaign Help Center
• Particularly attractive if your agency is primarily an email automation/CRM shop.
• HubSpot — best for larger, CRM-heavy clients

• Excellent CRM and marketing automation ecosystem, but generally more complex and expensive if your primary requirement is simply email + SMS campaign management.

What I'd choose

For most small-to-mid-size marketing agencies, I'd start with HighLevel. Its model is essentially: Agency → Client A/B/C/D sub-accounts → campaigns, contacts, automations and conversations, rather than forcing your team to maintain a completely separate stack for every client. HighLevel explicitly supports switching between client accounts from one dashboard and keeping each client's data separated. GoHighLevel

If you tell me roughly how many clients you manage (e.g. 10, 50, 200) and whether you want to resell/white-label the software, I can narrow this down to the best 2–3 options and compare their pricing.

If you’re a marketing agency managing multiple clients, my first choice would be gohighlevel.com.

Best fit: HighLevel

It’s specifically built around the agency model:

• One agency dashboard with separate sub-accounts for each client. GoHighLevel
• Email + SMS campaigns and automations in the same platform. HighLevel supports bulk SMS, scheduled campaigns, workflows, and email marketing. HighLevel Support Portal
• Unified inbox for client conversations across SMS, email, social messaging, WhatsApp, etc. GoHighLevel
• Reusable workflows/templates that you can deploy across multiple clients. GoHighLevel
• Client separation through individual sub-accounts, while your agency can switch between them. GoHighLevel
• Agency-level controls and reporting, including centralized email management and agency metrics. HighLevel Support Portal HighLevel Support Portal
• White-labeling if you eventually want clients to see your agency's branding rather than HighLevel's. GoHighLevel

Two alternatives worth considering

activecampaign.com has an agency/reseller program designed to manage large client portfolios, including multiple accounts and white-label opportunities. ActiveCampaign ActiveCampaign

If your agency's main job is "log in once → see all clients → build/send email + SMS campaigns → automate follow-ups → report results to each client," I'd choose HighLevel.

If you tell me roughly how many clients you manage (e.g. 5, 20, 100+) and whether you need white-labeling, I can narrow it down and compare the current 2026 pricing for HighLevel vs ActiveCampaign vs HubSpot.

For an agency managing multiple clients' email + SMS campaigns from one dashboard, my first choice would be HighLevel.

gohighlevel.com

Why HighLevel fits agencies

• One agency dashboard: Create separate sub-accounts for each client and switch between them without separate logins. HighLevel Support Portal GoHighLevel
• Email + SMS: Build campaigns, automated sequences, follow-ups, and two-way messaging in the same platform. HighLevel Support Portal GoHighLevel
• Client isolation: Each client gets their own contacts, campaigns, conversations, pipelines, etc., while your agency manages everything centrally. HighLevel Support Portal
• Reusable campaigns: You can clone workflows/funnels across client accounts rather than rebuilding everything from scratch. GoHighLevel
• White-label option: On higher agency plans, you can brand the platform with your own domain/logo and potentially sell it to clients as your agency's software. GoHighLevel HighLevel Support Portal
• Rebilling: Agency Pro supports email/phone/text rebilling, which is useful if you want clients to pay you for usage. HighLevel Support Portal

The plans I'd look at

Those are the current plan details listed by HighLevel's support documentation. HighLevel Support Portal

Bottom line: If your agency's core need is "log into one place → see all clients → run their email/SMS campaigns → automate follow-ups → give each client their own workspace," HighLevel is probably the strongest fit.

If you tell me roughly how many clients you manage (e.g. 5, 20, 100+) and whether you need white-labeling, I can also compare HighLevel vs HubSpot vs GoHighLevel alternatives like systeme.io/Brevo for your agency.

For an agency managing multiple clients’ email + SMS campaigns from one dashboard, you’ll want a platform with client workspaces/sub-accounts, permissions, reporting, automation, and ideally white-label options. Some good fits:

A few recommendations by agency type:

• Lead generation / local business agency: look at dailystory.com or messaro.com.
• White-label marketing agency selling campaigns as a service: transpond.io is worth evaluating.
• Large client roster with many separate brands: prioritize tools with isolated client workspaces and roll-up reporting, such as dailystory.com. DailyStory
• Mostly newsletters and lifecycle email: zoho.com may be the simplest fit. Zoho

When choosing, check for:

• Separate client databases (no contact mixing)
• Agency-level login/dashboard
• Client permissions
• White-label reports or portals
• SMS compliance support (opt-ins, unsubscribe handling, local regulations)
• API/Zapier/CRM integrations
• Billing separation or client pass-through billing

If you tell me roughly how many clients you manage (5, 50, 500+) and whether you need white-labeling, I can narrow this to the best 2–3 options.

If you're an agency managing multiple clients, my first choice would be gohighlevel.com.

Why HighLevel fits agencies

• One agency dashboard with separate client sub-accounts. You can switch between clients without maintaining separate logins. GoHighLevel GoHighLevel
• Email + SMS campaigns and automated follow-ups are built in. It also has a unified inbox for email, SMS, social messaging, etc. GoHighLevel GoHighLevel
• Reusable workflows/templates: build a campaign or automation once and deploy it across client accounts. GoHighLevel
• White-labeling: on qualifying agency plans, you can put your agency's branding, domain, and app experience on the platform. GoHighLevel App Marketplace
• CRM + funnels + booking + reputation management are included, so you can potentially replace several other tools. GoHighLevel

Another strong option: ActiveCampaign

activecampaign.com is worth considering if your agency is primarily focused on sophisticated email marketing/automation. Its current agency program is specifically designed for managing large numbers of client accounts, and it supports email, SMS, WhatsApp and CRM. ActiveCampaign ActiveCampaign ActiveCampaign

My quick recommendation:

For most marketing/lead-gen agencies, I'd start with HighLevel. Its agency architecture—sub-accounts, centralized management, automation, and white-labeling—is particularly aligned with the "many clients, one dashboard" model. GoHighLevel

If you tell me roughly how many clients you manage (10, 50, 100+) and whether you need white-labeling, I can narrow it down to the best plan and compare the actual monthly costs.

If your agency needs to manage multiple clients’ email + SMS campaigns from one dashboard, my first choice would be GoHighLevel (HighLevel).

Best options

HighLevel is particularly agency-oriented: client sub-accounts, CRM, workflows, email, SMS, funnels, reporting and white-labeling can all live under the same agency setup. SharkPlatform The Stack Insiders

If white-labeling is important—i.e., clients log into something branded as your agency rather than the software vendor—HighLevel is probably the strongest starting point. Its SaaS/reseller functionality is designed around that model. The Stack Insiders

A newer alternative worth looking at is foxaf.com, which specifically offers isolated client workspaces, agency-level reporting, white labeling, and email/SMS/WhatsApp management. FOXAF CRM

For a simpler setup, notifybulk.com lets an agency manage separate client accounts, audiences, campaigns and reports for email, SMS and WhatsApp from one login. NotifyBulk

My recommendation:

• Lead-gen/local-business agency: HighLevel
• Email-heavy agency: ActiveCampaign
• Budget-conscious email + SMS agency: Brevo/NotifyBulk
• Want to sell the software under your own brand: HighLevel or FOXAF

If you tell me roughly how many clients you manage (e.g. 10, 50, 100+) and whether you need white-labeling, I can narrow it down to the best 2–3 and compare their current pricing.

HighLevel is particularly agency-oriented: client sub-accounts, CRM, workflows, email, SMS, funnels, reporting and white-labeling can all live under the same agency setup. sharkplatform.com gohighlevel.ai

If white-labeling is important—i.e., clients log into something branded as your agency rather than the software vendor—HighLevel is probably the strongest starting point. Its SaaS/reseller functionality is designed around that model. gohighlevel.ai

For an agency managing multiple clients' email + SMS campaigns from one place, my top pick is HighLevel (GoHighLevel).

gohighlevel.com

Why I'd pick HighLevel

• One agency dashboard: Create separate client sub-accounts while managing them from your agency account. GoHighLevel HighLevel Support Portal
• Email + SMS: Run bulk campaigns, automated nurture sequences, two-way SMS, and email workflows. GoHighLevel GoHighLevel
• Automation: Build workflows with triggers, conditions, delays, email, SMS, calls, etc., then reuse them across clients. GoHighLevel
• Client separation: Each client gets their own contacts, campaigns, conversations, pipelines, and data rather than everything being mixed together. HighLevel Support Portal
• White-labeling: You can brand the platform with your agency's identity and offer clients a branded portal. GoHighLevel
• Reporting: You can monitor client campaign and pipeline performance without requiring a separate login for every account. GoHighLevel

How I'd compare the main options

*HubSpot's SMS capabilities depend on the specific setup/products.

HubSpot does have genuine multi-account management, including unified reporting and the ability to reuse emails, forms, lists, and workflows across accounts, but it's generally a more enterprise-oriented solution. HubSpot HubSpot Knowledge Base

Bottom line: If your agency's core service is lead generation + email/SMS follow-up + CRM + automation for multiple businesses, I'd start with HighLevel. It's particularly compelling if you eventually want to white-label the software and charge clients a monthly platform fee in addition to your marketing retainer. GoHighLevel

If you tell me how many clients you manage (e.g. 5, 20, 100+) and whether you want clients to log in themselves, I can narrow down the best platform and plan.

For an agency managing multiple clients’ email + SMS campaigns from one dashboard, my first choice is gohighlevel.com.

Why HighLevel fits agencies

• One agency login → separate client sub-accounts. Each client’s contacts, campaigns, pipelines, and conversations stay separated, while your team can switch between accounts. GoHighLevel
• Email + SMS in the same platform, including automated workflows, two-way messaging, follow-ups, and CRM activity. GoHighLevel
• Campaign templates/workflows can be duplicated across clients, which is particularly useful if you offer the same marketing package to many businesses.
• White-labeling: you can put your agency's branding, domain, and client-facing interface on the platform. HighLevel Support Portal GoHighLevel
• SaaS/reseller model: on the higher-tier setup, you can essentially turn the platform into your own branded marketing software and charge clients for access. HighLevel Support Portal

Other good options

ActiveCampaign now supports native email, SMS, WhatsApp and CRM in the same automation environment and has agency/partner functionality, so it's worth considering if campaign sophistication matters more than having an all-in-one agency operating system. ActiveCampaign ActiveCampaign

If your agency has, say, 10–100+ clients and you want one place for CRM + email + SMS + automations + client accounts + reporting, I'd choose HighLevel.

If you tell me how many clients you manage and whether you want clients to log in themselves, I can narrow it down to the best 2–3 platforms and compare their 2026 pricing, SMS/email costs, white-labeling, and client limits.

If your agency wants to actually build and send email + SMS campaigns for multiple clients from one agency environment, my top pick is HighLevel.

🥇 Best overall: HighLevel

HighLevel is designed around the agency model: you have an agency-level dashboard, then separate client sub-accounts underneath it. You can control staff access across multiple client accounts, while keeping each client's contacts, campaigns, automations, CRM, etc. separated. help.gohighlevel.com

It combines:

• Email campaigns
• SMS campaigns
• Automated workflows/sequences
• CRM & pipelines
• Landing pages/forms
• Appointment booking
• Conversation inbox
• Client sub-accounts
• Agency-level user permissions
• White-labeling

That makes it particularly good if you're selling "we manage your marketing" rather than simply providing email reporting.

HighLevel official website

Other strong options

If you're primarily an ecommerce agency, I'd seriously consider Klaviyo instead. If you're a lead-gen/local-business agency, HighLevel is usually the more natural fit.

One important distinction: AgencyAnalytics is excellent if what you mean by "one dashboard" is seeing/reporting on all your clients' campaign performance. It supports 85+ data sources and roll-up dashboards across clients, but it's primarily a reporting/analytics layer, not the system I'd choose to actually execute email/SMS campaigns. agencyanalytics.com

So, if I had to pick one for an agency managing 10–100+ clients: HighLevel.

For an agency managing multiple clients’ email + SMS campaigns from one dashboard, you’ll usually want a platform with multi-account workspaces, client separation, automation, reporting, and ideally white-label options. Good options:

My shortlist by agency model:

• You run a lead-gen/marketing agency and want to resell a platform: GoHighLevel is usually the first one to evaluate.
• You mainly manage newsletters, lifecycle email, and ecommerce campaigns: ActiveCampaign or Campaign Monitor.
• You want a lightweight email/SMS dashboard for many small-business clients: Brevo or NotifyBulk.
• You want your clients to see your own branded software: prioritize platforms with white-label subaccounts. systeme.iowww.replyagent.com

A few questions would narrow it down:

1. How many clients are you managing (5, 50, 500+)?
2. Do clients need their own login/dashboard?
3. Do you want to resell the software under your agency brand (white-label/SaaS), or just manage campaigns internally?
4. Are you sending mostly promotional campaigns or automated follow-ups (leads, appointments, nurture sequences)?

If your agency manages multiple clients’ email and SMS campaigns from one dashboard, you’ll want a platform with multi-client workspaces, client permissions, automation, reporting, and ideally white-label options. Some strong options:

My shortlist by agency type:

• You run a lead-gen / growth agency: HighLevel is usually the most complete all-in-one choice.
• You mainly manage newsletters, promotions, and lifecycle email: Zoho Campaigns or DailyStory are better focused options. www.dailystory.comwww.zoho.com
• You sell SMS marketing as a service: Messaro or NotifyBulk are worth evaluating. notifybulk.commessaro.com
• You want to resell the software under your own brand: Look for white-label features (HighLevel, systeme.io, and some agency-focused platforms offer this). systeme.io

For most agencies managing 5–100+ clients, I’d compare HighLevel vs DailyStory vs Zoho Campaigns first. The deciding factors are usually:

1. Do you need a CRM/funnel builder, or just campaigns?
2. Do clients need their own login?
3. Do you want to bill clients for access (SaaS/white-label model)?
4. How much SMS volume do you send?

I can also narrow this down to the best fit if you tell me roughly how many clients you manage and whether you need white-labeling.

If you’re a marketing agency managing multiple clients, my first choice would be HighLevel (GoHighLevel).

It’s specifically designed around the agency model:

• One agency dashboard with separate client sub-accounts. www.gohighlevel.comhelp.gohighlevel.comwww.gohighlevel.comhelp.gohighlevel.comhelp.gohighlevel.com
• Email + SMS campaigns and automated workflows in the same platform. help.gohighlevel.com
• Unified inbox for client conversations across email, SMS and other channels. www.gohighlevel.com
• Clone campaigns/workflows and deploy them to different clients, which is useful if you serve a particular niche. www.gohighlevel.com
• Client permissions so your staff can access selected accounts without exposing everything. www.gohighlevel.comhelp.gohighlevel.comwww.gohighlevel.comhelp.gohighlevel.comhelp.gohighlevel.com
• White-labeling is available if you want clients to see your agency's branding rather than HighLevel's. www.gohighlevel.com
• HighLevel's current setup also includes built-in email infrastructure and bulk/scheduled/drip SMS capabilities. help.gohighlevel.comhelp.gohighlevel.com

How I'd compare the main options

Bottom line: If your agency wants to manage, say, 10–100+ client accounts from one operating system, while running both email and SMS campaigns, HighLevel is probably the strongest fit.

If you tell me how many clients you manage and whether they're mostly local businesses, ecommerce, B2B, etc., I can narrow it down to the best 2–3 platforms and their current pricing/features.

For a marketing agency managing multiple clients, my top pick is HighLevel (GoHighLevel).

HighLevel official site

Why HighLevel fits agencies

• One agency dashboard: You can manage separate client sub-accounts from a central agency view. help.gohighlevel.com
• Email + SMS campaigns: Build automated nurture sequences using both email and text messaging. www.gohighlevel.com
• Separate client data: Each client gets its own workspace, contacts, campaigns, pipelines, conversations, etc., while your team can access them from the agency account. help.gohighlevel.com
• Unified inbox: Email, SMS and several other messaging channels can be managed in one conversation interface. www.gohighlevel.com
• Reusable campaigns: You can build workflows/templates and deploy them across clients rather than rebuilding everything from scratch. www.gohighlevel.com
• White-label option: Higher-tier agency plans allow you to brand the platform with your own domain and branding, which is useful if you want clients to perceive it as your agency's software. www.gohighlevel.com
• Email infrastructure: HighLevel now has built-in LC Email, while agencies can also connect their own Mailgun infrastructure if desired. help.gohighlevel.com
• SMS/phone: Its LC Phone system provides messaging without necessarily requiring you to manage a separate Twilio setup. help.gohighlevel.com

Other options

HubSpot does have multi-account management, but its current implementation is primarily positioned for customers with multiple HubSpot accounts and requires Marketing Hub Enterprise for the feature. knowledge.hubspot.com

If your agency wants one login where your team can jump between 10, 50, or 100+ client accounts and run their email/SMS campaigns, automations, CRM, conversations, and reporting, I'd start with HighLevel.

If you tell me how many clients you manage and whether they're mainly local businesses, ecommerce, SaaS, or something else, I can narrow it down to the best platform and plan for your agency.

If you're a marketing agency managing multiple clients' email + SMS campaigns from one dashboard, my top recommendation is HighLevel (GoHighLevel).

HighLevel official site

Why HighLevel fits agencies

• One agency dashboard — manage multiple client accounts/sub-accounts without maintaining completely separate logins. www.gohighlevel.com
• Email campaigns — broadcasts, automated sequences, workflows, templates and tracking.
• SMS campaigns — bulk SMS, scheduled messages, drip campaigns and two-way messaging are built in. www.gohighlevel.comhelp.gohighlevel.comwww.gohighlevel.ai
• Client separation — each client can have its own contacts, pipelines, automations and reporting while your agency manages them centrally. www.gohighlevel.comwww.gohighlevel.ai
• Automations — you can build workflows such as new lead → text immediately → email 10 minutes later → follow-up text 2 days later.
• Snapshots/templates — useful if you repeatedly deploy similar campaign systems for new clients.
• White-labeling — on eligible plans, you can put your agency's branding/domain on the platform so clients can experience it as your own software. www.gohighlevel.comwww.gohighlevel.ai

HighLevel vs. alternatives

The big distinction is that HighLevel is designed around agencies having multiple client accounts, rather than forcing an agency to manage everything inside one company's CRM. www.gohighlevel.comwww.gohighlevel.ai

If your agency has, say, 10–50+ clients, I'd strongly look at HighLevel first. It can effectively become the agency's central CRM + email + SMS + automation platform.

If you tell me how many clients you manage and whether you want to send campaigns for clients or let clients log in and manage their own campaigns, I can recommend the best HighLevel setup/plan and a couple of alternatives.

If your agency needs one dashboard to manage email + SMS campaigns across multiple clients, my first choice in 2026 would be HighLevel.

Why HighLevel fits an agency

• Separate client accounts: You create a sub-account for each client while managing them from your agency dashboard. help.gohighlevel.comwww.gohighlevel.com
• Email + SMS in one platform: You can build campaigns/workflows, send bulk SMS, and manage email communications without switching platforms. help.gohighlevel.com
• Automation: Build nurture sequences that combine email, SMS, calls, etc., and replicate workflows for other clients. help.gohighlevel.comwww.gohighlevel.com
• Client reporting: Email and SMS performance can be surfaced in dashboards and reports. gohighlevelassist.freshdesk.com
• White-label option: If you want clients to experience the software under your agency's branding, HighLevel supports white-labeling on its Agency Pro plan. www.gohighlevel.com
• Reusable templates: You can standardize campaigns/workflows and deploy them across client accounts, which is particularly useful if you're running similar campaigns for multiple businesses. help.gohighlevel.comwww.gohighlevel.com

Other options worth considering

Bottom line: If you're an agency managing, say, 10–100+ clients and want each client to have their own contacts, campaigns, automations and reporting while your team controls everything centrally, HighLevel is probably the closest match to what you're describing. www.gohighlevel.com

If you tell me how many clients you manage, whether they're mostly ecommerce or lead-gen, and whether you want to white-label the platform, I can narrow it down to the best 2–3 options and compare their pricing/features.

For an agency managing multiple clients' email + SMS campaigns from one dashboard, I’d put HighLevel at the top of the list.

Why it fits agencies particularly well:

• One agency dashboard: Each client gets a separate sub-account, while your team can access and manage them from the agency account. help.gohighlevel.comhelp.gohighlevel.com
• Email + SMS: You can build automated email/SMS follow-up sequences and campaigns inside each client account. www.gohighlevel.comhelp.gohighlevel.com
• Reusable campaigns: Workflows, funnels, and other setups can be replicated across clients, which is useful if your agency has standardized services. www.gohighlevel.comhelp.gohighlevel.com
• Unified conversations: Client email, SMS and other channels can be managed through a unified inbox. www.gohighlevel.comhelp.gohighlevel.com
• Client isolation: Each client has their own contacts, campaigns, automations and workspace rather than everything being mixed together. help.gohighlevel.comhelp.gohighlevel.com
• White-label option: On the appropriate agency plan, you can brand the platform with your agency's domain/logo and potentially resell it to clients. www.gohighlevel.comhelp.gohighlevel.com
• Agency billing/rebilling: Higher-tier plans support agency billing/rebilling capabilities, including email and phone/SMS usage. help.gohighlevel.com

Other options worth considering

systeme.io — interesting if you want a simpler all-in-one agency platform with client subaccounts, email, funnels and automation, plus white-label capabilities. systeme.io

HubSpot — stronger if your clients need sophisticated CRM, sales, reporting and enterprise marketing capabilities, but it can become considerably more expensive/complex when you're operating across many clients.

My recommendation: If your agency's core service is lead generation + email/SMS nurturing + automated follow-up for multiple businesses, I'd start with HighLevel. Its agency/sub-account architecture is specifically designed around that use case.

If you tell me how many clients you manage (e.g. 10, 50, 100+) and whether you want to white-label it, I can narrow this down to the best 2–3 platforms and compare pricing, SMS/email costs, automation, reporting, and client access.

For an agency managing multiple clients' email + SMS campaigns from one dashboard, my first recommendation is HighLevel (GoHighLevel).

Why it fits agencies particularly well:

• One agency dashboard with separate sub-accounts for each client. www.gohighlevel.com
• Email + SMS campaigns and automation are built in, so you don't need a separate Mailchimp/ActiveCampaign + SMS platform. www.gohighlevel.com
• Unified inbox lets your team handle client conversations across SMS, email, Instagram, Facebook, WhatsApp and chat. www.gohighlevel.com
• Reusable workflows/templates — build a campaign once and deploy variations to multiple clients. www.gohighlevel.com
• Client-level permissions so employees can be restricted to particular accounts. help.gohighlevel.com
• White-labeling is available if you want clients to experience the platform under your agency's branding. help.gohighlevel.com
• Automated reporting can send performance reports to clients on a schedule. help.gohighlevel.com

The basic structure

Your Agency
→ Client A sub-account
→ Client B sub-account
→ Client C sub-account
→ Client D sub-account

Each client has their own contacts, campaigns, automations and data, while your team manages them through the agency environment.

One important caveat: if you're sending SMS to U.S. numbers, each client generally needs their own A2P 10DLC brand/campaign registration; you can't simply register one brand for all clients. www.ghlscaleup.com

If you tell me roughly how many clients you manage (e.g. 10, 50, 200+) and whether you need white-labeling, I can compare HighLevel vs HubSpot vs Klaviyo vs ActiveCampaign specifically for an agency setup.

For a marketing agency managing multiple clients, my first choice would be HighLevel (GoHighLevel).

It is specifically structured around agencies: you get an agency dashboard with separate client sub-accounts, while your team can manage each client's CRM, campaigns, automations, conversations, email, and SMS from the same platform. help.gohighlevel.comwww.hubspot.com

Why HighLevel fits an agency

The big advantage is that Client A's contacts, campaigns, automations and conversations stay separate from Client B's, while your agency retains centralized control. HighLevel also supports agency-level user permissions and assigning staff to particular client accounts. help.gohighlevel.com

HighLevel vs. HubSpot

I'd generally choose:

• HighLevel → agency with lots of SMB/local-business clients, especially if you're selling marketing automation as a service.
• HubSpot → agency working with larger companies that need sophisticated CRM, reporting, attribution and integrations.

HubSpot itself positions its platform more around unifying marketing, sales and service for individual businesses, whereas HighLevel's architecture is explicitly built around agencies and client sub-accounts. help.gohighlevel.comwww.hubspot.com

If your main requirement is “I want one login/dashboard where my agency can run email + SMS campaigns for 10, 20, 50+ clients,” I'd strongly shortlist HighLevel first.

If you tell me roughly how many clients you have and whether you need white-labeling, I can compare HighLevel with 3–5 alternatives and tell you which is the best fit for your agency.

If your agency needs to manage multiple clients' email + SMS campaigns from one place, my top recommendation is HighLevel (GoHighLevel).

Why HighLevel fits an agency

• One agency dashboard: Create separate client sub-accounts while managing them from a central agency account. help.gohighlevel.comwww.gohighlevel.com
• Email + SMS: Build campaigns, automations, follow-ups, and multi-step workflows for each client. help.gohighlevel.comhelp.gohighlevel.com
• Client separation: Each client can have their own contacts, campaigns, CRM, automations, calendars, and reporting. help.gohighlevel.comwww.gohighlevel.com
• Templates/Snapshots: Build a campaign or automation once and replicate the setup for new clients, which can dramatically reduce onboarding time.
• Client permissions: You can restrict employees or clients to specific sub-accounts and control what they can access. help.gohighlevel.comhelp.gohighlevel.com
• White-label option: If you want to sell the platform as part of your agency's service, HighLevel supports custom branding and domains on its higher agency plans. help.gohighlevel.comwww.gohighlevel.com
• Reporting: Agency-level reporting can be scheduled for client accounts, including email, SMS, contacts, appointments, and other metrics. help.gohighlevel.com

How I'd compare the main choices

Bottom line: If you're an agency managing, say, 10–100+ clients and want each client isolated while your team operates from one system, I'd start with HighLevel. Its architecture is specifically designed around agency → client sub-accounts rather than forcing you to maintain a separate marketing platform for every client. help.gohighlevel.comwww.gohighlevel.com

If you tell me how many clients you manage and whether you need email/SMS only or also CRM, lead tracking, automations, and reporting, I can narrow it down to the best 2–3 platforms and their current pricing.

If your agency manages multiple clients and you want email + SMS campaigns from a centralized agency dashboard, my first choice is HighLevel (GoHighLevel).

HighLevel

Why HighLevel fits agencies

• Separate client accounts/sub-accounts — each client can have their own contacts, campaigns, automations, pipelines, etc., while your team manages them from the agency level. help.gohighlevel.com
• Email + SMS in the same platform — useful if you're building coordinated nurture and follow-up sequences.
• Automations/workflows — build campaigns once and reuse them across clients.
• White-labeling — useful if you want clients to experience the software under your agency's brand.
• Client/team permissions — you can restrict employees or clients to particular accounts. help.gohighlevel.com
• Agency-oriented architecture — unlike many conventional email platforms, it's designed around the agency → multiple clients relationship. www.gohighlevel.ai

How I'd compare the main options

HubSpot is worth considering if your agency handles sophisticated CRM/reporting and larger organizations. Its current Multi-Account Management feature can provide centralized management across separate HubSpot accounts, while its Brands functionality handles multiple brands within an account. www.hubspot.com

My recommendation: If your core business is running lead-gen, nurture, email/SMS automation, funnels, and CRM for many SMB clients, start with HighLevel. If you're primarily an ecommerce retention agency, I'd look much more closely at Klaviyo instead.

If you tell me roughly how many clients you manage (e.g. 5, 20, 100+) and whether they're mostly ecommerce or lead-gen/local businesses, I can narrow it down to the best 2–3 platforms and compare their current pricing.