Moving from Mailchimp to Kit: when it pays, what breaks, and what it costs

By Marcus Webb · Pricing verified on both vendor pages October 23, 2026 · Hands-on testing in progress — see note below

The case for leaving Mailchimp writes itself for most small lists: the free plan now stops at 250 contacts, a 500-subscriber list pays $20 a month forever, and there is no annual-billing escape hatch at that size. The case against leaving is the migration itself. Here is both, sized.

First, confirm the economics actually favour it

Mailchimp Standard at 0–500 contacts is $20/month; annual billing is not offered below 10,000 contacts. Kit's free plan carries 10,000 subscribers without automations; Creator at $33/month adds them. Verified October 23, 2026.

Two honest rows in that table: if you need automations at a tiny list, Kit is more expensive — the migration buys you nothing this year. And if what you run is shop marketing rather than a newsletter, you are using Mailchimp for its actual product, and switching to a creator tool is sideways. The comparison in full is in Kit vs Mailchimp.

What the move actually involves

The honest estimate for a small list — under 5,000 subscribers, no complex automations — is half a day, most of it checking. The steps:

1. Export everything from Mailchimp, not just contacts. The audience export gives you names and emails. Separately export your tags, your signup sources, and any custom fields. Tags are the part people forget, and tags are what Kit's whole model is built on — the migration's value depends on them surviving.
2. Check your list health before you import. A 500-subscriber list that has not been mailed in a year has dead addresses on it. Importing them into a new platform with a good sending reputation is how a fresh account lands in spam. Prune first: anyone who has not opened in twelve months goes on a separate sheet, not in the import.
3. Rebuild the signup forms and their source tracking. Every embedded form, landing page and popup on your site points at Mailchimp. Each one needs repointing at Kit, and each one is a chance to lose signups silently. Change them all in one sitting and test each with a real submission.
4. Do not migrate automations — decide whether you need them. If you were paying Mailchimp $240 a year for automations, Kit Creator at $33 is the equivalent, and its automations are rebuilt rather than imported. If you were not using automations, you are migrating a list and four forms. Be honest about which one you are.
5. Warm up, do not blast. First send from the new platform: your most engaged segment. A cold full-list send from a domain with no sending history at the new provider is the single most common way migrations end up in spam folders.

What breaks, and what does not

• Breaks: archived campaign links if you delete the Mailchimp account — keep the account free or export your archives as PDFs before closing; third-party integrations wired to Mailchimp (your shop, your course platform) each need re-authorising; and your archive of "who was sent what", which most platforms export badly.
• Does not break: your subscribers' relationship with you — nobody unsubscribes because the footer logo changed, provided the sends keep arriving on schedule.
• The subtle one: open-rate history. It does not transfer, and on any platform it is getting less reliable anyway. Do not let it be a reason to stay.

The cost accounting, honestly

Half a day at a freelancer's own billing rate is a few hundred dollars of time — call it the same as the first year's savings at 500 subscribers. That is the real trade: the migration pays back in year one only if your list is above roughly 1,000 subscribers or you were on a paid Mailchimp tier for a reason that no longer applies. Below that, the case for moving is not the $240 — it is putting the list on a platform whose free plan will still be there at 5,000 subscribers, so this is the last migration for a while. That logic is the subject of what a 500-subscriber list actually costs.

And the reverse case deserves its sentence: Mailchimp bills overages automatically on paid plans instead of pausing your sending — convenient in operation, unpleasant on the invoice. If your objection to Mailchimp is that mechanism rather than the price, no migration is needed; the fix is knowing it exists. The mechanism is documented in Mailchimp pricing explained.

What we cannot verify

Both vendors' prices were verified October 23, 2026. We have not performed this migration ourselves on a live account: export fidelity, Kit's tag-mapping behaviour, deliverability after a cold-start import, and third-party re-authorisation friction are all unverified by us, and the half-day estimate is our judgement for a simple list, not a measurement. If your setup includes an e-commerce integration or more than two automations, double the estimate before you start. See How We Test, and for the general version of this arithmetic, what switching tools actually costs.