How contact-based pricing works, what it charges for besides active subscribers, and how to estimate the real cost of a year rather than the advertised cost of a plan.
Most established email platforms price on the size of a contact database. The plan card shows a monthly figure attached to a contact tier, and that figure rises as the database grows. The logic is intuitive enough that few buyers examine it: more contacts, more cost. What makes it worth examining is that the thing being measured — how many records are stored — has an inconsistent relationship with the thing being bought, which is the ability to reach people who want to hear from the organization.
A team can double its contact count and see no change in revenue, engagement, or sending volume. The bill still moves. A team can clean its list, improve targeting, and get better results from fewer messages. The bill does not move down unless someone manually removes records. Over several years, this produces a familiar pattern: a marketing budget line that grows steadily while the marketing itself stays roughly the same size.
Contact-based pricing charges for storage, not for outcomes
The first thing to establish when evaluating any platform is what specifically counts toward the billable number, because the definitions vary and the differences are substantial. Some platforms bill only contacts who are actively subscribed. Others bill every record in the database regardless of status.
Mailchimp's published pricing documentation states that subscribed, unsubscribed, and non-subscribed contacts all count toward the plan limit, and that contacts are only excluded once they have been archived, cleaned, or deleted. This means an organization pays for people who opted out, for addresses that hard-bounced, and for records that never confirmed an opt-in — none of whom can legally or practically be emailed. For an organization that has been sending for several years without a removal routine, that population is not marginal. Constant Contact bills on contact count as well, with monthly send allowances tied to a multiple of that count and overage charges applied beyond it.
The practical consequence is that list hygiene, which is already the right thing to do for deliverability, becomes a billing obligation as well — and one the platform does not perform automatically. A contact who unsubscribed in 2022 sits in the database as a paid line item until a person notices and archives them. Nobody is deliberately charging for the oversight, but the incentive to build a prominent cleanup workflow is obviously not strong.
Duplicates and multiple audiences multiply the count
The second definition to check is how a platform handles the same person appearing in more than one place. Mailchimp's model treats each audience as a separate entity, and its documentation confirms that duplicate subscribed contacts across audiences are included in the total subscriber count. One individual in three audiences is three billable contacts.
This affects some organizations far more than others. A single business with one newsletter will rarely notice. An organization that separates contacts by program, region, membership tier, event, or brand will notice immediately, because the natural way to organize that work — a separate audience per context — is also the most expensive way. The standard advice is to keep audience count low and use segments and tags within one audience instead, which is sound advice, but it means the data structure is being chosen to manage the invoice rather than to reflect how the organization actually operates.
Anyone running marketing for more than one brand, chapter, location, or client should model this specifically before committing. Ask how contacts are counted across brands, whether the same person in two brands is billed twice, and whether separate reporting contexts require separate accounts with separate subscriptions.
Send allowances and seat limits are the second and third meters
Contact count is rarely the only variable. Constant Contact's plans include a monthly send allowance calculated as a multiple of contact count — ten times on Lite, twelve on Standard, twenty-four on Premium — with additional sends billed at a fraction of a cent each. A thousand contacts on the entry tier allows ten thousand sends a month, which sounds generous until it is divided across a weekly newsletter, a segmented follow-up, an event reminder sequence, and a re-engagement campaign.
User seats are the third meter and the one most often discovered late. Constant Contact's Lite plan includes one user, and Standard includes three. Mailchimp's lower tiers similarly cap users and audiences. A team that wants a writer to draft, a manager to approve, and an owner to publish needs at least three people with access, and on the cheapest plans that access does not exist. What happens next is predictable: credentials get shared, or the review step moves into email and chat where it is not recorded. The social media approval workflow guide describes what a functioning review process requires, and most of it assumes the reviewers can actually log in.
Verify all three meters against each vendor's live pricing page before making a decision. Plan structures, thresholds, and inclusions change — Mailchimp's free tier was reduced in January 2026, and Constant Contact removed its free plan entirely — so figures published anywhere, including here, should be treated as a prompt to check rather than as current fact.
Estimate twelve months, not one
The comparison most teams make is between advertised entry prices, which is the comparison every pricing page is designed to win. A more useful exercise takes about twenty minutes.
Start with the actual number of records in the current database, not the number of active subscribers, unless the platform under consideration bills only on active status. Add expected growth over twelve months at the realistic rate, not the aspirational one. Add any contacts that appear in more than one audience, counted once per appearance if the platform bills that way. Look up the price at the resulting tier rather than the entry tier. Multiply by twelve.
Then add the second and third meters. Estimate monthly sends by listing the campaigns actually planned — newsletter, sequences, event messages, follow-up journeys — and multiplying by the audience each reaches. Compare that to the plan's included allowance and price the overage. Count the people who need their own login and check whether the tier permits that number. Finally, add anything charged separately: transactional email, SMS, additional brands, and any tool being kept alongside the platform because it does not cover social scheduling, design, or approvals.
The resulting figure is what the year costs. It is frequently well above the number on the plan card, and it is the only figure worth comparing across vendors. A platform with flat plan pricing, such as NextStep's plans, produces a different shape of answer to the same exercise — the number is known in advance and does not move with list growth — but the exercise matters more than which model wins it, because the answer depends on the specific list, send pattern, and team size.
When contact-based pricing is the better deal
It would be dishonest to present this model as universally worse. It is genuinely better for some organizations, and pretending otherwise makes for a weak argument.
A very small list is cheap under contact pricing and may cost less than any flat plan. An organization with two hundred contacts and one monthly newsletter has little reason to pay a fixed monthly rate designed for a team running multiple channels. Contact pricing also scales downward, which flat pricing does not: an organization that shrinks its list can move to a lower tier.
The larger platforms also bring real advantages that are unrelated to pricing model. Mailchimp's template library, integration catalog, and ecommerce features are extensive and well built, and for a store running abandoned-cart and product-recommendation flows it is a strong fit. Constant Contact's event management and its live phone support are genuine differentiators, and phone support in particular matters to organizations without technical staff. A team whose main constraint is email sophistication rather than coordination across channels may well be better served by either.
The model becomes questionable in a specific circumstance: an organization with a growing list, several brands or programs, a team of more than one person, and work that spans email and social. That combination triggers every meter at once — more contacts, more audiences, more sends, more seats — while the platform addresses only part of the work.
What to ask before switching
Switching costs are real and should be weighed honestly. Migration takes time, historical reporting rarely transfers cleanly, deliverability reputation partly resets when the sending domain configuration changes, and templates need rebuilding. A saving of thirty dollars a month does not justify a project that consumes a week and introduces delivery risk.
Before moving, get concrete answers on a few points. What exactly counts as a billable contact, and does unsubscribed or bounced status change that? How are the same contacts across different brands or audiences counted? What are the send limits and overage terms? How many users are included, and can they hold different permission levels? What happens to the bill when the list grows by half? What does the platform not do, requiring another subscription alongside it?
That last question is the one most often skipped and most often expensive. Comparing the full feature set of any candidate against the actual list of jobs the team performs each month — drafting, approving, scheduling social, sending email, tracking contacts, following up — will usually reveal that the advertised price covers a subset of the work. The cost of the remainder belongs in the comparison too.
Pricing model is not the most important criterion for choosing a marketing platform, and a team that picks primarily on cost usually ends up switching again. But it is worth understanding what is being metered, because a bill that grows on its own is a bill nobody chose. The goal is not to find the cheapest plan. It is to know, before signing up, what the second year costs and what caused it.