For an agency, the number that decides everything on this product is not the price. It is the audience count, because an audience is a client, and Standard gives you five.

Above five clients the published options are a second account, or Premium at three hundred and fifty dollars a month. There is nothing in between.

OUR TAKE: Mailchimp prices on contacts and caps on audiences, and those two meters pull in opposite directions for an agency. A shop with fifty thousand contacts in one audience fits comfortably on Standard. An agency with eight clients of five hundred contacts each does not, despite having a twelfth of the volume. Count your clients before you count your contacts.

The four numbers an agency should read first

All four come from the vendor's own plan comparison table, counted cell by cell[3].

Row Premium Standard Essentials Free
Audiences Unlimited 5 3 1
Users (seats) Unlimited 5 3 1
Role-based access 5 Roles 4 Roles 2 Roles Not included
Enterprise SSO Included Not included Not included Not included

Read the first two rows together. Five clients and five seats on Standard, three and three on Essentials. An agency of six people serving six clients is outside Standard on both meters at once, and the next step up is Premium.

That is a jump from twenty dollars at the entry contact band to three hundred and fifty at ten thousand contacts, which is the shape of this product's ladder rather than a penalty aimed at agencies. But the effect on an agency is particular: you are pushed up the ladder by client count rather than by list size, and the price is set by list size.

💡
Toolkit tip

Count clients before contacts. The audience cap binds before the contact band does on a typical agency book.

## Why audiences matter more than contacts here

In Mailchimp an audience is a separate contact database with its own signup forms, tags, segments and reporting. For most businesses one audience is the right answer and the vendor says so in its own guidance. For an agency, one audience per client is usually the only defensible structure, because client data should not mingle.

So the audience cap is a client cap. Three on Essentials, five on Standard, unlimited on Premium.

There is a second reason the structure matters. The contact limit is account-wide rather than per-audience, which means your bill is the sum of all your clients' lists in one number. One client's acquisition campaign moves the price for every client you serve, and the billing rule is the peak contact total of the period rather than the closing one[6].

An agency therefore absorbs its clients' volatility into a single invoice, and has to decide whether to pass it on.

The separate-accounts option, and what it costs

The alternative to one account with many audiences is many accounts with one audience each. The vendor does not publish an agency programme that prices this, so it is simply several ordinary subscriptions.

That has one advantage worth real money: each client's contact count sits in its own band, at the bottom of the ladder where the price per thousand contacts is highest but the absolute figure is lowest. Five clients of five hundred contacts each on five Essentials accounts is five times thirteen dollars, promotional, against a single Standard account that would hold them all for twenty.

The disadvantages are operational and they compound. Five logins, five billing relationships, five promotional clocks running on different dates, and no cross-client reporting at all. And each of those five promotions expires on its own schedule, which turns a single renewal conversation into five.

Our view, and it is a judgement rather than a measurement: separate accounts make sense when clients own their own data and pay their own bills, and one account makes sense when the agency owns the relationship. The pricing does not decide it.

💡
Toolkit tip

Run one archiving pass per client at the start of each billing cycle. The contact limit is account-wide, so every client's lapsed contacts sit in your band.

## Seats, and the role model

Role-based access is marked "Not included" on the free tier and runs two, four and five roles on the paid ones[3]. Seats run one, three, five and unlimited.

For an agency the seat count binds earlier than the role count. A team of four with one freelancer is already at Standard's ceiling, and the next step is Premium rather than an additional seat at a published price. We found no published per-seat price for this product on any page.

That is a different shape from the products we have measured in other categories, where an extra seat usually has a price. Here the seat count is a tier attribute rather than a purchasable unit, which means team growth moves you up a ladder priced on contacts.

Enterprise single sign-on is Premium only, which matters for agencies with client security requirements rather than for small teams.

Curious how Mailchimp feels in practice?Try Mailchimp →

What Premium adds that an agency would actually use

Three rows, and the first two are what the money buys.

Unlimited audiences and unlimited seats, which is the whole structural argument for the tier.

Personalized onboarding at four sessions, against one session on Standard and nothing on the two tiers below[3]. For an agency migrating several client lists at once that is the difference between a project and an afternoon.

And Premium Migration Services, which reads "Contact Sales" on Premium and "Not included" on every other tier[3]. So migration help exists, it is Premium-only, and it is not priced.

Phone support is also Premium only, against 24/7 email and chat on Standard. For an agency with a client campaign going out on a Friday, that distinction is worth pricing honestly.

💡
Toolkit tip

Ask whether aggregate spend across several client accounts counts toward the customer-success threshold. The footnote attaches it to spend, and does not say whether it must be one plan.

## The support threshold nobody will tell you about

One figure in a footnote applies to agencies more than to anyone else: "Customer Success is included with select custom plans that spend at least $299 per month with Mailchimp."[4]

An agency running several client accounts may well pass two hundred and ninety-nine dollars a month in aggregate, and the footnote attaches the entitlement to spend rather than to tier. Whether aggregate spend across several accounts counts, or whether it has to be one custom plan, is not published.

Ask. It is the one number on this product where an agency's structure might qualify it for something a single business of the same size would not get.

The promotional clock, multiplied

Every paid card is discounted fifteen percent for twelve months, and the rate afterwards is published as a rule rather than a figure[8]. For a single business that is one date to diary.

For an agency with separate client accounts it is one date per account, each falling on the anniversary of that client's signup. Derived from the vendor's own percentage, each Essentials account goes from thirteen dollars to about fifteen twenty-nine and each Standard from twenty to about twenty-three fifty-three.

Three further published conditions make this harder to manage at scale. Cancelling during the period forfeits the offer. Pausing does not pause it. And changing plan does not extend it[8].

So an agency that moves a client from Essentials to Standard in month seven does not reset anything, and the client's promotional period still ends in month twelve. Keep the dates in one place, because the product will not.

⚠️
Watch out

Separate client accounts mean separate promotional clocks, each expiring on its own anniversary, and none of them resets when you change a plan.

## What to put in a client contract

Three things we would write down before taking on a client's Mailchimp account, all of them from published vendor rules.

Who owns the account. If the agency's name is on the billing, the agency carries the cancellation path, and for a monthly plan that path is self-service while for an annual one it goes through sales[8][16].

Who pays the overage. Exceeding the contact limit on a paid plan adds an add-on contact block charge rather than stopping the sending[6], and the price of a block is not published. A client's unexpected list growth becomes the agency's invoice unless the contract says otherwise.

And what happens to the data at the end. Archived contacts keep their data and their presence in reports[15], which is a useful property when a client leaves and you want to stop paying for them without destroying the campaign history.

The habit that saves an agency the most money

Archiving, applied per client, at the start of each billing cycle.

Because the contact limit is account-wide, every client's lapsed contacts sit in the same number that sets your band. Archived contacts do not count toward the contact total or the plan price[5], and the trade is published: the contact leaves the table, cannot be edited or marketed to, and keeps their data and reports[15].

Cleaned contacts come off automatically, because the platform removes addresses that hard bounce[14]. Unsubscribed contacts do not come off at all, and across several client lists they accumulate quietly.

One pass per cycle, per client, is the whole discipline. The peak-total rule means the timing matters as much as the action: archiving on the last day of a cycle does nothing for that cycle[6].

⚠️
Watch out

An overage is charged as an add-on contact block whose price is not published, so a client's unexpected growth lands on whoever holds the billing.

## What the reviews say that an agency should weigh differently

We read one hundred Mailchimp reviews in full and sorted them by star rating. Two rows of that cross-tabulation change meaning when the account is an agency's rather than a business's own.

Theme Share of 1-2 star reviews Share of 4-5 star reviews Gap
Billing and charges 33% 3% +30
Support 52% 26% +27
Locked out of the account 16% 0% +16
Interface 3% 13% -10

Sixteen percent of unhappy reviewers describe losing access to their own account, and none of the happy ones do. For a business that is a bad week. For an agency it is every client's campaign at once, because the accounts an agency holds are the accounts an agency is locked out of.

Support appears in just over half of low reviews. An agency is the customer most likely to need support on somebody else's deadline, and phone support sits on Premium only.

The interface row runs the other way, and it matters here too. Agencies onboard junior staff and hand over to clients, and the one thing reviewers consistently praise is the thing those people will touch. Across the two app stores the product carries 74,983 ratings at 4.9 and 4.7.

So the risk profile for an agency is not that the software will be hard to use. It is that the commercial relationship will go wrong on a day when several clients are watching.

What is not published, and matters at agency scale

Five gaps, each of which an agency hits sooner than a single business does.

The price of an extra seat. Seats are a tier attribute and no per-seat figure appears anywhere, so the sixth team member costs the difference between Standard and Premium rather than a seat price.

The price of an add-on contact block, which is how every overage is charged across every client list you hold[6].

The list price from month thirteen, per band, which an agency needs once per client account rather than once[8].

Whether aggregate spend across several accounts counts toward the two hundred and ninety-nine dollar customer-success threshold[4].

And the price of Premium Migration Services, which reads Contact Sales and is the service an agency is most likely to want, because migrations are what agencies do[3].

Put all five in one email before the first client lands. None of them is on the website, and all five become recurring questions rather than one-off ones at agency scale.

⚠️
Watch out

Premium migration services and phone support are Premium only, and the migration service is not priced.

## Where an agency should look elsewhere

Two cases, stated plainly.

If your clients are newsletters and creators rather than businesses, Kit prices on subscribers and advertises unlimited broadcasts, which suits a high-frequency sender better than a send allowance tied to the contact limit.

If you need the tier to move with your client count without a conversation, MailerLite raises the tier and charges the card automatically when active subscribers exceed the limit. That is the opposite trade from Mailchimp's, and for an agency it means no surcharge to notice and no control over when the bill moves.

We measured those two vendors' pricing pages on the same day and nothing else about their products. Both will get the full treatment this one has had.

Ready to put Mailchimp to the test?Try Mailchimp →

A worked example, on a real agency shape

Take an agency with six clients. Two have five hundred contacts, three have two thousand, and one has eight thousand. Total fifteen thousand five hundred contacts across six audiences.

On one account that is six audiences, which exceeds Standard's five, so the structure requires Premium. Premium's floor is ten thousand contacts and the contact total is above that anyway, so the account sits on Premium at three hundred and fifty dollars promotional, four hundred and eleven seventy-six derived from month thirteen.

On six separate accounts the same clients sit in six separate bands near the bottom of the ladder, where the entry price is thirteen or twenty dollars each. Six Standard accounts at the entry band is one hundred and twenty dollars promotional, a third of the Premium figure, with six logins and six renewal dates against one.

Neither structure is wrong. The point is that the price difference between them is large, runs in the direction most people do not expect, and is driven by the audience cap rather than by anything about the clients.

Work your own book both ways before choosing. The arithmetic takes ten minutes and the answer holds for a year.

Three things to settle with the vendor first

The per-seat question, because it has no published answer and it will decide your tier before your contact count does.

The aggregate-spend question on customer success, because an agency is exactly the customer shape that might clear two hundred and ninety-nine dollars a month across several accounts without clearing it on any one.

And the migration question, because Premium Migration Services is the service an agency most wants and the only pricing signal on it is the phrase Contact Sales[3].

None of those three is a complaint about the vendor. They are the three places where an agency's structure differs enough from a single business that the published material stops answering.

Frequently asked questions

How many clients can I manage on one Mailchimp account?+

As many as your audience limit allows, and an audience is the sensible unit per client: one on Free, three on Essentials, five on Standard and unlimited on Premium. The contact limit is account-wide, so all clients' lists are summed into the figure that sets your price.

Does Mailchimp have an agency plan?+

No agency-specific pricing is published. An agency either runs one account within the audience and seat caps of its tier, or several ordinary accounts, each in its own contact band with its own billing relationship and its own promotional expiry date.

How much does an extra seat cost on Mailchimp?+

No per-seat price is published on any page. Seats are a tier attribute rather than a purchasable unit: one on Free, three on Essentials, five on Standard and unlimited on Premium, so team growth moves you up a ladder that is priced on contacts.

## The decision, for an agency

Count clients first and contacts second, because the audience cap binds before the contact band does on a typical agency book.

Three clients fit Essentials. Five fit Standard. Six or more means Premium at three hundred and fifty, or separate accounts with the operational cost that carries.

Then count seats, because five is also the Standard ceiling there and no per-seat price is published anywhere.

And if your aggregate spend approaches three hundred dollars a month, ask whether it qualifies you for customer success management. It is the only published entitlement on this product that an agency's shape might unlock and a single business of the same size would not.

Sources
  1. [1] Mailchimp vendor pricing page, read from the United States (2026-10) https://mailchimp.com/pricing/
  2. [2] Mailchimp vendor plan comparison table (2026-10) https://mailchimp.com/en/pricing/marketing/compare-plans/
  3. [3] Mailchimp vendor marketing-plans page (2026-10) https://mailchimp.com/en/pricing/marketing/
  4. [4] Mailchimp vendor documentation on plans (2026-10) https://mailchimp.com/en/help/about-mailchimp-pricing-plans/
  5. [5] Mailchimp vendor documentation on additional charges (2026-10) https://mailchimp.com/en/help/about-additional-charges/
  6. [6] Mailchimp vendor documentation on pricing tiers (2026-10) https://mailchimp.com/en/help/mailchimp-pricing-tiers/
  7. [7] Mailchimp standard terms of use (2026-10) https://mailchimp.com/en/legal/terms/
  8. [8] Mailchimp promotional offer terms (2026-10) https://mailchimp.com/en/legal/promotional-offer-terms/
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  14. [14] Mailchimp vendor documentation on archiving (2026-10) https://mailchimp.com/en/help/archive-unarchive-contacts/
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  16. [16] Mailchimp vendor about page (2026-10) https://mailchimp.com/en/about/
  17. [17] Trustpilot, displayed score and distribution (2026-10) https://www.trustpilot.com/review/mailchimp.com
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  21. [21] Google Play listing (2026-10) https://play.google.com/store/apps/details?id=com.mailchimp.mailchimp