MailerLite vs Mailchimp: Billing, Sends and Migration

MailerLite and Mailchimp should not be compared by pasting the same exported row count into two pricing selectors. First work out which people are billable, which may receive marketing and which records must stay suppressed.

Shortlist MailerLite for a newsletter-led operation that values explicit subscriber and send boundaries. Keep Mailchimp on the shortlist when its existing integrations, audience setup and campaign workflows would be expensive to replace. The decision is about the complete operating cost, not a promise that a smaller entry price produces more sales.

This is a documentation-based comparison checked 17 October 2026. We have not measured inbox placement, campaign performance or migration speed.

BenPicks may earn a commission through MailerLite links on its product profile; we have no active Mailchimp affiliate link in this comparison. This does not determine the recommendation. The source links below are ordinary, untracked documentation links.

What to compare before looking at a saving

We do not publish a side-by-side monthly saving until both quotes cover equivalent contacts, sends and features. The live selector and account billing rules take precedence over an old invoice or a screenshot for a different tier.

Original scenario: reconcile 10,000 exported rows

Imagine a business exports ten thousand unique contact rows: 6,500 are subscribed, 2,000 unsubscribed, 1,000 non-subscribed and 500 cleaned. Those statuses are hypothetical, not BenPicks customer data. Mailchimp documents them as different states; a contact record is not automatically permission to send marketing.

If the 6,500 subscribed people are valid, opted-in recipients and all other requirements are met, four full-list campaigns represent 6,500 × 4 = 26,000 sends. Quote MailerLite for the eligible active list and the relevant tier. Separately reconcile the source account's billable count, any duplicates across audiences and its billing-period rules before claiming a saving.

Do not import the remaining 3,500 rows as active subscribers merely to make an import total match an export. Retain required suppression and consent evidence through the move. Transaction history, reporting and audience fields may need archival or manual mapping; a CSV transfer does not preserve an entire marketing system.

MailerLite counts an address that was active at any point in its billing cycle even if deleted later. Removing records after the fact therefore does not guarantee an immediate price reduction. That is distinct from the rule for unsubscribed or bounced contacts.

A launch changes the sending requirement

Keep the eligible list at 6,500, but change the calendar from four to fourteen campaigns. The new workload is 6,500 × 14 = 91,000 sends, before any welcome or purchase-related automations.

At an explicitly assumed MailerLite subscriber-tier ceiling of 10,000, Comfort's ten-times allowance would be 100,000 sends. The same 91,000 sends would not fit a hypothetical allowance of 65,000. The actual tier ceiling matters; it is not always identical to the current number of subscribers.

For Mailchimp, match the selected plan's contact/send allowance and any overage terms to the full workload. A higher send multiplier is useful only if the plan also provides the required features and the total quote makes sense. Do not assume that send capacity alone is a reason to move.

Download the reconciliation and send calculations and use the email cost guide to adapt the basket.

Migration needs a break-even date

Suppose rebuilding forms, templates and integrations takes an assumed eight hours at $30 per hour: $240 of internal work. If comparable live quotes then show a $20 monthly saving, the simple break-even period is 240 / 20 = 12 months.

Those are illustrative inputs, not vendor prices or measured project effort. Overlap subscriptions, retraining, failed automations and support can extend the period. If the monthly saving is zero or negative, this cost-only model has no positive break-even; a move would need a different operational benefit.

Before moving production, test one form, one welcome journey, one purchase exclusion and one unsubscribe. Check suppression states and a representative export. Keep the old system available until the replacement works and the necessary records are preserved.

Who should choose which?

Try MailerLite first when newsletters and a manageable automation set are the core job and the correctly sized quote improves the operating picture. Stay with or trial Mailchimp when important store/event connections, team habits or existing journeys make it the better complete system. Neither tool earns the recommendation just by having more features on its pricing page.

Use the migration checklist for the move itself. Compare MailerLite vs Kit if the main question is creator newsletters and automated sales rather than replacing an existing Mailchimp workflow.

For contact storage versus sending frequency, see MailerLite vs Brevo. Recalculate your own basket in the email cost calculator.

Sources and limits

Checked 17 October 2026: MailerLite pricing and contact/send FAQ ↗, billing help ↗, Mailchimp plans ↗, Mailchimp contact-state definitions ↗. Scenarios are calculations with disclosed assumptions, not observed customer results. Confirm consent, billing treatment and the selected plan's current terms before migration or payment.