ChatGPT answers, unedited

Yes. For a freelance marketer with several small clients, I’d separate “easy multi-client management” from true white-label/reseller software—they’re not the same thing.

My shortlist

*Brevo's agency capabilities and account structure should be checked against your exact setup before committing.

🥇 Best cheap option: MailerLite

mailerlite.com is probably where I'd start if you're managing campaigns for clients rather than selling them your own email platform.

You can manage separate client accounts from one login, switch between them quickly, and each client keeps separate subscribers, campaigns, automations and billing. Their Power plan currently starts at $25/month and provides unlimited user seats. MailerLite MailerLite

The catch: MailerLite explicitly does not offer true white-labeling. You can remove MailerLite branding from emails on paid plans, but clients will still be using MailerLite. MailerLite

So I'd use it if your model is:

“I manage your email marketing for you.”

rather than:

“Here's our agency's proprietary email marketing platform.”

🥈 Best if you genuinely want white-label: Acelle Mail

acellesend.com is much more interesting if white-labeling is a core part of your business.

It's self-hosted and has multi-tenant client accounts, your own domain/branding, client-specific plans, and billing. The current extended license is listed at $199 one-time, after which your ongoing infrastructure cost is primarily hosting and email delivery. AcelleMail

The downside is that you're taking on more technical responsibility—hosting, updates, SMTP infrastructure, deliverability, backups, etc.

For a technically comfortable freelancer with, say, 5–30 clients, though, this can become dramatically cheaper than paying SaaS fees for every client.

🥉 Best turnkey white-label: IGSendMail

igsendmail.com is designed specifically around the model you're describing: one agency dashboard, client subaccounts, custom branding/domain, client reporting and centralized billing. IGSendMail

Its current reseller pricing starts at $199/month ($159/month annually) for unlimited client accounts and 500,000 emails/month. IGSendMail

That's considerably more expensive than MailerLite, but if you're charging each client $50–$150+/month for email management, the economics can make sense.

What I'd choose at different client counts

• 1–5 clients: MailerLite. Don't over-engineer it.
• 5–15 clients: MailerLite or Brevo if you're simply managing accounts; start considering a reseller platform if you want clients to log in themselves.
• 15–30+ clients: Look seriously at Acelle or a true white-label reseller platform.
• You want to sell “our email marketing platform” as a recurring service: Acelle if you're technical; IGSendMail if you want turnkey.
• You just want to manage clients efficiently: MailerLite is probably the sweet spot.

One other option worth looking at is Spreeflo, which currently advertises unlimited client accounts and charges based on aggregate contacts rather than per-client accounts—for example, $30/month for 5,000 total contacts and $53/month for 15,000. However, its white-label functionality is currently described as being on the roadmap. spreeflo.com

My personal pick for a solo freelance marketer: start with MailerLite, unless white-labeling is something you're actually going to charge clients for. In that case, I'd skip the agency add-ons of mainstream ESPs and go straight to Acelle or a true reseller platform.

mailerlite.com is probably where I'd start if you're managing campaigns for clients rather than selling them your own email platform.

You can manage separate client accounts from one login, switch between them quickly, and each client keeps separate subscribers, campaigns, automations and billing. Their Power plan currently starts at $25/month and provides unlimited user seats. MailerLite MailerLite

The catch: MailerLite explicitly does not offer true white-labeling. You can remove MailerLite branding from emails on paid plans, but clients will still be using MailerLite. MailerLite

So I'd use it if your model is:

“I manage your email marketing for you.”

rather than:

“Here's our agency's proprietary email marketing platform.”

🥈 Best if you genuinely want white-label: Acelle Mail

acellesend.com is much more interesting if white-labeling is a core part of your business.

It's self-hosted and has multi-tenant client accounts, your own domain/branding, client-specific plans, and billing. The current extended license is listed at $199 one-time, after which your ongoing infrastructure cost is primarily hosting and email delivery. acellesend.com

The downside is that you're taking on more technical responsibility—hosting, updates, SMTP infrastructure, deliverability, backups, etc.

For a technically comfortable freelancer with, say, 5–30 clients, though, this can become dramatically cheaper than paying SaaS fees for every client.

🥉 Best turnkey white-label: IGSendMail

Yes. For a freelance marketer with several small clients, I’d separate “multi-client management” from true white-labeling—a lot of inexpensive tools do the former but not the latter.

My shortlist

🥇 Best cheap option: MailerLite

This is probably where I'd start if you're one freelancer managing, say, 5–20 small businesses.

MailerLite specifically has an agency workflow where one login can switch between separate client accounts, with each client's subscribers, campaigns, automations, templates and billing kept separate. There are also no per-seat fees on its agency setup. www.mailerlite.com

The catch: it's not truly white-label. MailerLite explicitly says it doesn't offer a white-label/reseller version of the app. www.mailerlite.com

So you can present yourself as the marketer managing their account, but you can't really turn MailerLite into “YourAgency Email Platform.”

🥈 Best if your clients send relatively little: Brevo

Brevo is particularly interesting for small clients because its pricing is based heavily on email volume rather than simply stacking up expensive contact-based plans.

A 2026 agency comparison also found Brevo to be the strongest value option for boutique agencies, specifically because pay-per-send economics can work well across multiple small lists. Its downside is that it doesn't provide the same polished native multi-client dashboard as a dedicated agency platform. hackceleration.com

I'd seriously consider this if your clients are businesses like:

• local contractors
• dentists
• consultants
• realtors
• restaurants
• small professional services firms

where you're sending a newsletter once or twice a month rather than running huge automated programs.

🥇 Best actual white-label: HighLevel

If by white-label you mean:

“I want my client to log into a platform that looks like my software, not HighLevel.”

then HighLevel is the standout.

The current pricing is roughly:

• $97/mo — up to 3 sub-accounts
• $297/mo — unlimited sub-accounts + branded desktop app/custom domain
• $497/mo — Agency Pro/SaaS features, including the ability to resell with markup

www.gohighlevel.com

The $297 plan is where it becomes particularly interesting for a freelancer/agency: you can have unlimited client sub-accounts under one agency account and brand the interface with your own domain/look and feel. www.gohighlevel.com

But I'd not buy HighLevel solely for email marketing with two or three tiny clients. You're paying for a much larger CRM/marketing platform.

What I'd do in your position

1–5 clients:
→ MailerLite. Cheapest/easiest and excellent for straightforward newsletters + automations.

5–20+ small clients:
→ Brevo if their email volumes are modest. The economics can be very good.

You want to sell “email marketing software” as part of your service:
→ HighLevel $297/mo becomes much more compelling because you can put each client into a separate sub-account and brand the experience as your own.

You want sophisticated email automation rather than white-labeling:
→ ActiveCampaign is worth considering, particularly if you're charging clients for automation strategy/buildouts.

One important distinction

I'd actually avoid paying for true white-label unless clients need to log in themselves.

If you're doing the work yourself—building campaigns, managing lists, reporting results—the much cheaper model is:

Your agency login → separate client accounts → client sees your reports

rather than:

Your branded SaaS platform → clients log in → you resell the software.

That distinction can save you hundreds of dollars a month.

If you tell me roughly how many clients you have (e.g. 5, 10, 20), average list size, and whether clients need their own logins, I can narrow this to the 2–3 cheapest setups and estimate your monthly cost.

Yes. For a freelance marketer with several small clients, I’d separate the options into “cheap multi-client management” and “true white-label.”

My picks

1. MailerLite — best if you don't actually need white-label

This is probably where I'd start as a solo freelancer. One login can switch between separate client accounts, with each client's subscribers, campaigns, automations, and templates kept separate. The paid Comfort plan starts at $12/month, while Power starts at $25/month and includes unlimited user seats. MailerLite MailerLite

The catch: MailerLite explicitly does not offer a white-label/reseller version. MailerLite

So you could manage 5–10 small clients fairly inexpensively, but clients would know they're using MailerLite.

mailerlite.com

2. MailerSend — interesting if white-label matters

MailerSend is particularly interesting for an agency because its Professional offering is explicitly positioned for agencies and white-label resellers, with large numbers of domains, users, templates, etc. MailerSend MailerSend

However, there's an important distinction: MailerSend is more email infrastructure/sending focused than a polished all-in-one newsletter marketing platform. Its low-cost Hobby plan is $7/month for 5,000 emails, while Starter is $35/month for 50,000 emails. MailerSend MailerSend

mailersend.com

3. HighLevel — best true agency platform, but not “cheap”

HighLevel is the one I'd consider if you're trying to build an agency product, rather than simply provide email marketing services.

Its Agency Unlimited plan is currently $297/month and gives you unlimited subaccounts plus a branded desktop app/custom domain. GoHighLevel

That's expensive if you have three $100/month clients. But if you're managing 10–30 clients and charging each one for a branded marketing platform, the economics become much more attractive.

gohighlevel.com

What I'd do in your situation

If you're sending campaigns for clients and they don't need their own login, I'd choose MailerLite and simply create/manage a separate account for each client.

If clients need to log in and see a platform branded as yours, I'd look at MailerSend or HighLevel, depending on whether you need just email or a complete CRM/automation system.

If you're trying to keep your total software bill under ~$50–100/month, I would not jump to HighLevel. MailerLite/MailerSend are much more economical at that stage.

If you tell me roughly how many clients you have (e.g. 5, 10, 20), average subscriber count per client, and whether clients need their own login, I can narrow this down to the cheapest setup and estimate your monthly cost.

Yes. For a freelance marketer managing several small-business clients, I’d separate the options into two categories: cheap multi-client management vs. true white-labeling.

🥇 My pick: MailerLite

MailerLite is probably the sweet spot for your situation.

Its agency setup lets you manage separate client accounts from one login, switching between them without logging in and out. Each client retains separate subscribers, campaigns, automations, and templates. www.mailerlite.com

The important catch: MailerLite isn't actually white-label. Their documentation explicitly says they don't offer a white-label/reseller version. www.mailerlite.com

Pricing starts around $12/month, and the Power plan starts around $25/month with unlimited users and sending. www.mailerlite.com

Why I'd use it as a freelancer: have each client own/pay for their MailerLite account, while you get agency access. That keeps your software cost extremely low and makes client handoff clean.

🥈 If true white-labeling matters: HighLevel

HighLevel is much more agency-oriented. It supports separate client subaccounts and has actual white-label/client-facing capabilities, rather than simply giving you access to multiple accounts. Its current plans include Starter, Unlimited and Agency Pro, with additional white-label-related services available depending on the plan/add-ons. help.gohighlevel.com

The downside is that it's considerably more platform than you need if you're primarily doing newsletters and basic automations. I'd choose it when you're selling clients a broader marketing system—CRM, funnels, automations, lead management, etc.—rather than just email.

🥉 Brevo for ultra-low-cost clients

Brevo starts at $9/month and prices heavily around sending volume. Its free tier allows 300 emails/day, while Starter removes the daily sending limit. help.brevo.com

It's attractive if you have clients with tiny lists and infrequent newsletters, but I wouldn't choose it primarily for agency account management.

What I'd do in your shoes

If you're managing, say, 5–20 local/small-business clients, I'd use:

MailerLite → clients own their accounts → you manage them through your agency login.

Then charge the client something like:

• $100–250/mo for basic newsletter management
• $250–500+/mo for newsletters + automations + reporting
• Software billed separately to the client

That way you're not eating the cost of 10 different email accounts, and the client retains ownership of their audience/data.

If you specifically want to sell "your own branded email marketing platform" where the client doesn't see MailerLite/HighLevel branding, I'd go HighLevel instead.

Bottom line:
👉 Cheapest/practical: MailerLite
👉 Best true agency/white-label solution: HighLevel
👉 Cheapest for tiny sending volumes: Brevo

If you tell me roughly how many clients you have, average subscriber count per client, and whether you need automations, I can calculate which one would actually cost you the least per month.

Yes. For a freelancer managing several small-business clients, I’d separate “cheap multi-account management” from true white-labeling—because the cheapest option often isn't the one with full white-label branding.

My shortlist

1. Brevo — probably my first choice for your situation

Brevo Agency Program

Brevo has a particularly good agency model: you can manage multiple client accounts from one login, switch between accounts, and clients can retain their own accounts/billing. Its agency program also offers 10–25% recurring revenue share depending on your partner tier. www.brevo.comhelp.gohighlevel.com

That's attractive if you're charging clients for your marketing service while having them pay their own email software bill.

I'd choose this if: you have ~3–20 small clients and don't actually need your own logo/domain inside the email platform.

2. MailerLite — best for keeping things cheap and simple

MailerLite for Agencies

MailerLite now explicitly supports agencies managing separate client accounts from one login, with each client retaining separate subscribers, campaigns, automations, templates and billing. www.mailerlite.com

The catch: MailerLite does not offer true white-labeling. It says agencies can build their own white-label dashboard through its API, but the normal product isn't white-labeled. www.mailerlite.com

Its paid plans start around $12/month, although each client account is separately billed rather than giving you an agency-wide pool. www.mailerlite.com

I'd choose this if: your clients are small, you want an easy interface, and you don't care whether they see MailerLite branding.

3. HighLevel — the one I'd pick if white-labeling is important

HighLevel

This is considerably more expensive, but it's designed around the agency/subaccount model.

• $97/mo: 3 subaccounts
• $297/mo: unlimited subaccounts + white-label desktop
• $497/mo: adds SaaS mode, allowing you to sell the software under your own brand and rebill clients with markup. www.gohighlevel.com

So, for example, at $297/mo with 10 clients, your underlying platform cost is roughly $30/client/month before email/SMS usage and other costs. At 20 clients, it's about $15/client/month.

The $497 plan is much more interesting if you're effectively trying to turn your freelance marketing operation into a mini SaaS/agency platform. HighLevel's current SaaS features let you create client accounts and rebill usage, and its newer Multi-Brands functionality supports up to two distinct brands in one SaaS account. help.gohighlevel.com

What I'd do in your shoes

1–5 clients:
→ MailerLite or Brevo, with each client paying their own subscription.

5–20 clients:
→ Brevo is probably the sweet spot. You get centralized management without committing to a $300/month agency platform.

10+ clients + you want your own branded portal:
→ HighLevel $297/mo starts making sense.

You want to sell “email marketing software” under your own brand:
→ HighLevel $497/mo/SaaS mode is the serious option.

One important distinction: don't confuse “I can manage all my clients from one login” with “white-label.” Brevo and MailerLite are excellent at the former; HighLevel is much closer to the latter.

If you tell me roughly how many clients you have (e.g. 5, 10, 20), average subscribers per client, and whether clients need to log in themselves, I can calculate the cheapest setup and break down the cost per client for 3–4 options.

Yes. For a freelance marketer with several small clients, I’d prioritize agency/client management and white-labeling, not just the cheapest per-email price.

My shortlist

1. MailerSend — my top pick

MailerSend is unusually well suited to your situation. Its agency setup lets you manage multiple clients from one account, while keeping each client's domains, settings, files and reporting separate. Its Professional plan gives you unlimited users, domains and sender identities, so adding another small client doesn't necessarily mean another subscription. www.mailersend.com

The catch is price: Professional is currently $110/month monthly or $88/month when billed annually, with 50,000 emails/month. That's more than a basic freelancer tool, but potentially very economical once you're managing ~5–10 clients. www.mailersend.com

MailerSend

2. Brevo — best if each client should have their own account

Brevo has an Agency Partner Program specifically for agencies and freelancers. You can switch between client accounts from your dashboard and manage clients centrally. The partner program is free to apply for and also offers revenue sharing. www.brevo.com

The important distinction: true centralized sub-account management is an Enterprise feature, so I wouldn't choose Brevo specifically for white-label multi-account management if you're only managing a handful of tiny clients. help.brevo.com

For ordinary client accounts, though, Brevo is inexpensive: Starter starts at $9/month, Standard at $18/month, and there's a free tier. help.brevo.com

Brevo

3. SendPulse — best dirt-cheap option

If your clients are genuinely small, SendPulse is worth looking at. Its free tier allows 500 subscribers and 15,000 emails/month, while paid plans start around $9.60/month for 500 subscribers when billed annually. Paid plans remove SendPulse branding. sendpulse.com

It's not as elegant for agency account management as MailerSend/Brevo, but the economics are excellent.

SendPulse

4. MailerLite — best easy-to-use option

MailerLite is excellent if you're essentially running campaigns for clients rather than needing a sophisticated agency control panel. Paid plans start at $12/month, with Power starting at $25/month and unlimited user seats on Power. www.mailerlite.com

However, this is a significant drawback for your use case: each client needs their own account and plan. MailerLite explicitly says it doesn't offer discounts for multiple accounts. www.mailerlite.com

MailerLite

What I'd do in your shoes

If you're managing 3–10 small businesses, I'd rank them:

MailerSend > Brevo Agency Partner > SendPulse > MailerLite

But there's an important business-model distinction:

• You want clients to see your agency's branding and you want one backend: MailerSend
• You want each client to own their account while you manage access: Brevo
• You want to spend as little as possible: SendPulse
• You just need a dead-simple email tool and don't mind separate subscriptions: MailerLite

If you tell me roughly how many clients you have (e.g. 5, 10, 20), average subscriber count per client, and whether you need clients to log in themselves, I can work out the cheapest setup and approximate monthly cost for you.

Yes. For a freelance marketer managing several small clients, I’d prioritize multi-account management over true white-labeling unless you specifically want clients to log into a platform branded as your agency.

My shortlist

🥇 Best overall: MailerLite

MailerLite is probably the sweet spot for your situation.

You can manage multiple separate client accounts from one login, switching between them in two clicks. Each client retains separate subscribers, campaigns, templates and billing. www.mailerlite.com

The catch: it isn't actually white-label. MailerLite explicitly says it doesn't offer a white-label/reseller version. www.mailerlite.com

Pricing starts around $12/month for its current entry paid plan, while its Power plan starts at $25/month and includes unlimited users and unlimited monthly emails. www.mailerlite.com

Why I'd choose it: Your clients can own/pay for their own accounts while you retain access and manage everything. That's a very clean freelancer arrangement.

🥈 Best for lots of tiny clients: Brevo

Brevo is particularly attractive if your clients have small lists but don't necessarily send constantly.

Its agency program provides centralized multi-account management, so you can switch among client accounts. Brevo also offers agency partners revenue sharing of 10–25% depending on partner tier. www.brevo.com

The pricing is unusually friendly at the low end: Free, then Starter from $9/month and Standard from $18/month. help.brevo.com

My pick if: you have, say, 5–15 local businesses each with a few hundred/thousand subscribers and modest monthly sending.

🥉 Cheapest/simple option: EmailOctopus

EmailOctopus is worth looking at if you don't need sophisticated automation.

Its free tier allows 2,500 subscribers and 10,000 emails/month, while Pro starts at $9/month (annual billing) for 10,000 subscribers. Pro also permits unlimited users and removes EmailOctopus branding. www.mailerlite.comemailoctopus.com

The downside for an agency is that it's not as elegant for centrally managing a portfolio of client accounts as MailerLite or Brevo.

🏆 If you mean real white-labeling: GoHighLevel

GoHighLevel is a different beast.

Its agency plans support separate client subaccounts, and the higher-tier SaaS Pro plan ($497/month) provides actual white-label/SaaS functionality—you can put your branding, domain and pricing on the platform and effectively resell it as your own software. www.gohighlevel.ai

But $497/month is overkill if you're primarily doing email marketing for a handful of small businesses.

It becomes interesting when you're selling a package like:

"We'll manage your email + CRM + SMS + automations + appointment booking + reputation management for $299/month."

Then the software itself becomes part of your recurring revenue.

What I'd do in your shoes

1–5 clients: MailerLite
5–20+ small clients: Brevo
Ultra-budget/simple newsletters: EmailOctopus
You want your clients to see your software/brand: GoHighLevel

One particularly good model is having each client own their MailerLite/Brevo account and billing, while you get delegated access. You avoid paying for all of their subscriber databases yourself, clients don't feel locked in, and you can charge your own management fee on top.

If you tell me roughly how many clients you have, average subscribers per client, and whether you want clients to log in themselves, I can narrow this down to the cheapest setup and estimate your monthly software cost.

If you’re a freelance marketer with several small-business clients, I’d prioritize multi-account management + low cost over true white-labeling. The cheapest platforms that actually work well for this are:

My recommendation: Brevo

For your situation, Brevo is probably the sweet spot.

Its agency program gives you centralized multi-account management, so you can switch between client accounts without maintaining a bunch of separate logins. It also offers revenue sharing of 10–25% depending on your agency tier. www.brevo.comwww.mailerlite.comwww.mailerlite.com

The big advantage is that you can have each client own their account and billing, while you retain access as their marketer. That's cleaner than putting all clients under one giant account.

Brevo Agency Program

MailerLite is arguably even better for simplicity

If you're primarily doing newsletters, automations, forms and basic funnels, I'd seriously consider MailerLite.

It explicitly supports agencies managing multiple separate client accounts from one login, with two-click account switching. Each client retains their own subscribers, campaigns, templates and billing. www.mailerlite.com

The catch: MailerLite does not offer true white-label/reseller software. www.mailerlite.com

That's actually fine for many freelancers. You can brand your service while the client knows you're managing their MailerLite account.

Its paid plans currently start around $12/month, although pricing scales with subscriber count. www.mailerlite.com

If you specifically want true white-label: HighLevel

HighLevel is the obvious choice if you eventually want to sell email marketing as an agency product under your own brand.

But it's considerably more expensive:

• $97/mo — 3 client sub-accounts
• $297/mo — unlimited sub-accounts + white-label desktop
• $497/mo — adds SaaS mode and more agency/reselling capabilities help.gohighlevel.comwww.mailerlite.com

Its email sending is usage-based at $0.675 per 1,000 emails, and the $297/$497 tiers support email rebilling to subaccounts. help.gohighlevel.com

So I'd not pay $297/month just to white-label email if you only have, say, 3–8 small clients.

What I'd do in your shoes

1–5 clients:
→ MailerLite or Brevo

5–15 clients:
→ Brevo is probably my pick because centralized account management + agency program becomes increasingly valuable.

You want clients to see your brand instead of the software's brand:
→ HighLevel, but only once you're making enough recurring revenue to justify ~$297/month.

You want to resell email marketing as a product:
→ HighLevel becomes much more interesting because of its subaccounts, rebilling and white-label capabilities.

Bottom line: For an independent freelancer trying to keep overhead low, I'd start with Brevo. If your clients mostly need straightforward newsletters/automations, MailerLite may be even simpler and cheaper. I wouldn't jump to HighLevel until you have enough recurring clients to make the $297/month agency tier economically sensible. www.mailerlite.com

If you're a freelance marketer with several small clients, I'd separate “manage multiple accounts” from true “white-label.” They lead to very different best choices.

My picks for your situation

1. MailerLite — best if you mainly need inexpensive client management.

MailerLite explicitly supports agencies switching between separate client accounts from one login. Each client retains separate subscribers, campaigns, templates and billing, so you don't have to consolidate everyone's data into one account. It also doesn't charge a special agency/white-label fee. www.mailerlite.comwww.mailerlite.com

The catch: each client needs their own paid account/billing, so it isn't ideal if you're trying to absorb the software cost and resell it under your own brand. www.mailerlite.comwww.mailerlite.com

2. HighLevel — best if you're actually building a small agency.

This is the strongest conventional option if you want clients to perceive the email/CRM/automation platform as your service. The $97/month plan gives you 3 subaccounts; $297/month gives unlimited subaccounts. Its Agency Pro tier adds SaaS Mode and the ability to rebill email/phone usage with markup. www.gohighlevel.com

At $297/month, for example, you could have 10–20 small clients without paying another software subscription for each one. That's considerably more attractive once you have a decent client roster.

3. AcelleMail — the interesting option if true white-label is important.

This is more technical, but potentially much cheaper at scale. Acelle's agency version is self-hosted, multi-tenant and designed for resellers: clients can have separate accounts/plans while the interface runs under your domain and branding. The extended license is currently advertised at $199 one-time, although you'll need to account for hosting and SMTP/email-delivery costs. acellesend.com

That makes it particularly interesting if you're comfortable managing some infrastructure.

4. Spreeflo — worth watching if you're extremely cost-conscious.

It advertises unlimited clients with pricing based on total contacts rather than the number of clients, starting at $13/month. However, white-label isn't available yet according to its current agency page, so I wouldn't choose it if white-labeling is a must-have. spreeflo.com

What I'd do in your shoes

• 1–5 clients: MailerLite. Keep each client in their own account and charge a management fee.
• 5–15 clients: I'd seriously consider HighLevel if you're providing automation/CRM along with email.
• 15+ small clients: HighLevel, or AcelleMail if you're technically comfortable and want maximum margin.
• You specifically want clients to see your brand instead of MailerLite/HighLevel: AcelleMail or HighLevel are the more relevant choices.
• You just want one convenient login without true white-label: MailerLite is probably the sweet spot.

One important distinction: white-labeling the software UI isn't the same as sending email from the client's branded domain. You generally want each client's emails authenticated with their own domain (SPF/DKIM/DMARC), regardless of which platform you choose.

If you tell me roughly how many clients you have (e.g. 5, 10, 20) and the typical list size (e.g. 500–2,000 subscribers each), I can work out the cheapest setup and what you'd need to charge each client to make it profitable.

Yes. For a freelance marketer with several small clients, I’d prioritize multi-account management and low overhead over a traditional “white-label email platform.” There are a few good options:

🥇 Best value: EmailSendX

EmailSendX is particularly interesting for your situation. It's explicitly designed around agencies and multiple brands.

Its current pricing is:

• $0/mo — 1 workspace
• $12/mo — 3 workspaces
• $24/mo — 10 workspaces
• $83/mo — 25 workspaces

Each workspace isolates contacts, templates, branding, sending providers, and users. It also supports white-labeling and lets you bring your own sending provider such as Amazon SES, SendGrid, Brevo, Mailgun, etc. emailsendx.com

That makes it unusually attractive if you're managing, say, 3–10 small businesses. Your software cost could be only $12–24/month, with the actual email-sending cost handled separately.

🥈 Best conventional option: MailerLite

MailerLite is probably what I'd choose if you don't actually need clients to see a completely rebranded platform.

MailerLite lets you manage separate client accounts from one login, switch between them in two clicks, and keep subscribers/campaigns/templates/billing separated. It explicitly says there are no per-seat fees or white-label upcharges. www.mailerlite.com

The catch: MailerLite does not offer native white-labeling. www.mailerlite.com

For many freelancers, that's actually fine: the client owns the MailerLite account, you get access, and you manage it for them. This is also cleaner when a client eventually leaves.

🥉 Best if you want clients to own their accounts: Brevo

Brevo Agency Program has a free agency partner program with centralized multi-account management. You can switch among client accounts from your dashboard and manage their accounts without making yourself the owner. www.brevo.com

The nice part for a freelancer is that Brevo also has an agency referral/commission structure, currently ranging from 10% to 25% of client recurring revenue depending on partner tier. www.brevo.com

I'd seriously consider this model if your clients are price-sensitive and you're charging them separately for management.

When I'd use HighLevel

HighLevel is the strongest choice if by "white-label" you mean:

"I want my client to log into something that looks like my own marketing platform."

The $297/mo Unlimited plan gives you unlimited subaccounts and white-label desktop access. The $497/mo Agency Pro adds SaaS Mode, allowing you to actually resell the platform under your own branding and pricing. help.gohighlevel.com

But for a freelancer with only a handful of small email clients, $297–497/month is hard to justify unless you're also using its CRM, funnels, SMS, calendars, reputation management, etc.

What I'd do in your shoes

1–3 clients:
→ MailerLite or Brevo. Keep each client's account separate and have the client pay the software bill.

3–10 clients:
→ EmailSendX is probably the most compelling low-cost agency setup, particularly if you want actual workspace separation + white-labeling.

10–25+ clients:
→ EmailSendX remains interesting at $83/mo for 25 workspaces, or move to HighLevel if you're turning email management into a broader agency product. emailsendx.com

If you're trying to sell "email marketing as a service" under your own brand:
→ EmailSendX for a lean operation; HighLevel if you want a full-fledged white-labeled client portal/SaaS business.

One important distinction: "white-label" and "manage multiple client accounts" aren't the same thing. For a freelancer, I would actually favor client-owned accounts + centralized access unless you're deliberately trying to resell the software. It keeps client data, billing, and account ownership clean when someone stops working with you.

If you're a freelance marketer with several small clients, I’d separate “multi-client management” from true white-labeling. The cheapest good options aren't necessarily the same.

My shortlist

1. Best overall for a solo freelancer: MailerLite

This is probably where I'd start. MailerLite specifically supports agencies: you can manage separate client accounts from one login, with each client's subscribers, campaigns, automations and templates kept separate. Its Advanced plan also supports unlimited user seats and granular permissions. www.mailerlite.comspreeflo.com

The catch: it isn't true white-label software. MailerLite explicitly says it doesn't offer a white-label/reseller version. www.mailerlite.comspreeflo.com

That makes it excellent if your model is:

“I manage your MailerLite account for you.”

rather than:

“Here's my own branded email-marketing platform.”

2. Cheapest if you have lots of tiny lists: Spreeflo

Spreeflo is interesting because it charges based on total contacts across all clients rather than per client. Its current agency pricing shows 5 clients/5,000 contacts at $30/mo, 10 clients/15,000 contacts at $53/mo, and 20 clients/50,000 contacts at $160/mo. spreeflo.com

That's potentially very attractive if you have, say, 10 clients with 500–1,500 subscribers each.

But it currently says white-label options are on its roadmap, so I wouldn't choose it if white-labeling is a requirement. spreeflo.com

3. If you genuinely need white-label: HighLevel

HighLevel is the serious agency option. The current $297/month Unlimited plan gives you unlimited subaccounts plus a branded desktop app/custom domain. help.gohighlevel.com

That's substantially more expensive than MailerLite, though, so it only makes financial sense if you're managing enough clients to spread the $297 across them.

For example:

• 3 clients → $99/client
• 10 clients → $29.70/client
• 20 clients → $14.85/client
• 30 clients → $9.90/client

HighLevel also supports email rebilling, so you can potentially pass email costs through to clients. help.gohighlevel.com

What I'd do in your position

If you have 2–10 small clients: go with MailerLite and have each client maintain their own account/billing. Charge your clients separately for your management service. It's cheap, clean, and you don't need to pay $297/month just to get white-labeling.

If you have 10–30+ clients with relatively small lists: investigate Spreeflo first because its contact-based agency pricing can be dramatically cheaper than paying for separate accounts.

If you're trying to build an actual branded “email marketing platform” business: HighLevel is the much better fit. At that point you're not merely freelancing—you can effectively package the software as part of your service.

One other distinction: if by white-label you mean “clients shouldn't see Mailchimp/MailerLite branding in the emails I send for them,” that's much easier than needing a completely white-labeled client portal. In that case, I'd broaden the shortlist considerably.

If you tell me roughly how many clients you have + average subscribers per client + whether you need clients to log in themselves, I can narrow this to the 2–3 cheapest setups and calculate your monthly cost.

Yes. For a freelance marketer, I’d separate “manage many client accounts cheaply” from “true white-label/reseller.” They lead to different choices.

My pick: MailerLite

For a solo freelancer with, say, 5–20 small-business clients, MailerLite is probably the sweet spot.

Its agency setup lets you use one login to switch between completely separate client accounts, with each client's subscribers, campaigns, automations, templates and billing kept separate. It explicitly says there are no per-seat fees, shared dashboards, or white-label upcharges. www.mailerlite.com

The catch: it isn't actually white-label. MailerLite says it does not offer a white-label/reseller version of its app. www.mailerlite.com

That's not necessarily a problem if you do the marketing and clients don't need to log into a branded platform.

If white-label is important: MailerSend

MailerSend is particularly interesting for agencies. You can put multiple client domains/senders into one agency account while keeping client activity separated. Its Professional plan supports unlimited users, domains and sender identities. www.mailersend.com

More importantly, MailerSend explicitly supports building your own white-label client dashboard through its API, so clients can interact with your branded interface rather than MailerSend's. www.mailersend.com

The downside is that the inexpensive plans aren't really designed around a polished white-label agency experience; the higher-end Professional plan is aimed at agencies/white-label resellers and is substantially more expensive. www.mailersend.com

HighLevel if you're selling a bigger package

HighLevel makes more sense if you're not merely sending newsletters but selling clients a marketing system—CRM, funnels, automations, SMS, email, appointment booking, etc.

It has agency sub-accounts and genuine white-label capabilities, but I'd consider it overkill for a freelancer who primarily needs email marketing. Current HighLevel documentation also shows various per-sub-account/add-on costs, so the economics become different from simply having inexpensive email accounts. help.gohighlevel.com

The inexpensive setup I'd use

If I were running a freelance marketing business, I'd probably do:

MailerLite → one agency login → separate account for every client → client owns their account/billing → I get access as the manager.

That gives you clean separation without paying for a giant agency platform. MailerLite's current pricing starts at $12/month for Comfort and $25/month for Power at the 500-subscriber level, while free accounts are available for very small lists. www.mailerlite.com

If you need the client-facing software itself to carry your agency's branding, I'd move toward MailerSend + your own lightweight dashboard or HighLevel.

Bottom line:

• 🥇 Cheapest/easiest freelancer setup: MailerLite
• 🥈 Best if actual white-labeling matters: MailerSend
• 🥉 Best all-in-one agency platform: HighLevel
• Best if you want email + SMS cheaply: Brevo

If you tell me roughly how many clients you have and the typical subscriber count per client (e.g. 10 clients × 2,000 contacts), I can work out which option would actually be cheapest per month.

Yes. For a freelance marketer with several small-business clients, I’d separate the options into “cheap multi-account management” and “true white-label/reseller.”

My shortlist

1. MailerLite — probably your best value

MailerLite is particularly well suited to your situation. Its agency setup lets you use one login to switch between separate client accounts, with each client retaining its own subscribers, campaigns, automations and templates. www.mailerlite.com

The downside is important: MailerLite does not offer true white-label/reseller software. www.mailerlite.com

Pricing currently starts at $12/month for the Comfort plan and $25/month for Power, although each client's account is billed separately. www.mailerlite.com

MailerLite agency information

I'd choose this if: your clients are happy knowing they're using MailerLite and you're charging them separately for management.

2. Brevo — strong alternative

Brevo has an explicit Agency Partner program with centralized multi-account management. You can switch between client accounts from your agency dashboard, and the program includes revenue sharing of 10–25% depending on partner tier. www.brevo.comhelp.gohighlevel.com

It's attractive if you want clients to own their accounts while you retain centralized access. Brevo also supports removing its branding, although that's different from completely white-labeling the platform. help.brevo.com

Brevo Agency Program

I'd choose this if: you want a more formal agency/partner relationship and potentially want commissions from client accounts.

3. HighLevel — best actual white-label option, but much more expensive

HighLevel is the interesting one if by "white-label" you mean:

"I want my clients to think this is my own marketing platform."

Its $297/month Freelancer plan provides unlimited sub-accounts and white-label desktop, while the $497/month Pro plan adds more agency/SaaS functionality. help.gohighlevel.com

It also lets you rebill email costs to clients on the higher agency plans, so you can build the software cost into your monthly client fee. help.gohighlevel.com

The catch is that $297/month is a lot if you only have 2–5 small clients.

HighLevel official site

What I'd do in your shoes

If you're managing 3–10 small clients, I'd start with MailerLite or Brevo, have each client maintain their own account/billing, and charge them your monthly management fee.

For example:

Client pays $150/mo

• $20–30 → email software
• $120–130 → your management/service fee

That keeps your software overhead extremely low and avoids you becoming responsible for everyone's email-sending bill.

Once you have enough clients that you're effectively selling a "marketing platform + service" rather than just managing campaigns, HighLevel becomes much more interesting because the unlimited sub-accounts and white-labeling can let you consolidate everything under your agency brand.

Bottom line:
🥇 MailerLite = best cheap freelancer solution
🥈 Brevo = best agency-partner alternative
🥉 HighLevel = best true white-label solution, but only economical once you have enough clients to justify $297+/month

If you tell me roughly how many clients you have (e.g. 5, 10, 20) and their average subscriber count, I can calculate which option would actually be cheapest for you.

Yes. If you’re a freelancer handling multiple small-business clients, I’d look beyond the usual Mailchimp-style setup and prioritize multi-account management + low overhead + some form of white-labeling.

My shortlist

🥇 Best value: Brevo

Brevo is probably the first one I'd investigate for your situation.

Its Agency Partner program provides centralized multi-account management, so you can switch between clients from one dashboard rather than maintaining a pile of separate logins. It also offers revenue sharing as you bring clients onto the platform. www.brevo.com

The big advantage for a freelancer is that your software cost doesn't have to scale directly with the number of client accounts in the same way a traditional per-seat agency platform might.

I'd choose Brevo if you're mostly selling:

• Newsletter management
• Basic automations
• Lead nurturing
• Campaign creation
• Reporting
• Occasional SMS/CRM functionality

🥈 Best simple option: MailerLite

MailerLite is particularly attractive if you don't actually need clients to see a fully branded version of the software.

MailerLite explicitly supports agencies managing multiple separate client accounts from one login, with each client retaining their own subscribers, campaigns, automations and templates. www.mailerlite.com

The catch: it isn't white-label. MailerLite says agencies can't rebrand the application itself. www.mailerlite.com

Pricing starts around $12/month for its paid Comfort tier, while the Power plan starts at $25/month and adds unlimited users. www.mailerlite.com

For a freelancer with, say, 5–10 small clients, I'd seriously consider this if you're okay with clients knowing they're using MailerLite.

🥉 Best true white-label: HighLevel

HighLevel is the one I'd look at if white-labeling is actually part of what you're selling.

Current pricing is:

• $97/mo — 3 sub-accounts
• $297/mo — unlimited sub-accounts + branded desktop
• $497/mo — adds SaaS mode and more extensive rebilling capabilities www.gohighlevel.com

The $297 plan is particularly interesting: you can have unlimited client sub-accounts and a branded desktop/custom domain, effectively making HighLevel feel like your agency's own platform. www.gohighlevel.com

It also supports email rebilling, so you can potentially build the software cost into what you charge clients. help.gohighlevel.com

The downside is obvious: $297/month is a lot if you're only managing a handful of small email clients. HighLevel also includes a huge amount of CRM, funnels, SMS, pipelines, automation, etc., which may be overkill if you only need email.

What I'd do in your shoes

If you're managing 3–10 clients and primarily doing email:
→ Brevo first.

If you want the easiest/cheapest setup and don't care about white-labeling:
→ MailerLite.

If your business model is "I provide clients with my own marketing platform" and you want to charge them monthly:
→ HighLevel $297 becomes much more compelling.

There's an important distinction here: "manage multiple clients" and "white-label" are not the same thing. You can get excellent multi-client management very cheaply without actually white-labeling the software.

If you tell me roughly how many clients you have (e.g. 5, 10, 20), average subscriber count per client, and what you charge each client per month, I can calculate which platform gives you the best margin per client.