Creators leave Mailchimp for Kit when the newsletter stops being a mailing list and starts being a business. Mailchimp is built around campaigns to audiences; Kit is built around a creator with one subscriber base, tags describing what each person cares about, and tools to sell to them — digital products, paid newsletters, and the recommendation network.
The mechanics are simpler than most migrations because you are usually moving one list rather than a pipeline. The part that needs thought is the model shift: Mailchimp’s separate audiences become one Kit subscriber base segmented by tags, and if you map that badly you spend months untangling it.
Kit also offers a free migration service on paid plans, and for most creators it is worth using. This guide covers both routes — what their team handles, and what you still have to do yourself either way.
How long this takes
2–3 hours
Most of that time goes into rebuilding automations and repointing forms, not the import itself.
Why switch from Mailchimp to Kit?
Switch if…
- You want to sell digital products or paid subscriptions from the same tool that sends the newsletter.
- Mailchimp’s per-contact pricing is eating your newsletter revenue.
- You need tag-based segmentation rather than duplicated audiences.
- You want the Kit recommendation network as a growth channel.
- Plain-text-style emails from a person perform better for you than designed templates.
Stay put if…
- Your emails depend on heavily designed templates — Kit is deliberately plainer.
- You run ecommerce campaigns with product feeds, where Klaviyo or Mailchimp fits better.
- You need advanced reporting; Kit’s analytics are intentionally simple.
Mailchimp vs Kit: the key differences
| What changes | Mailchimp | Kit |
|---|---|---|
| Data model | Separate audiences, contacts duplicated | One subscriber base, tags and segments |
| Billing | Per contact, duplicates billed twice | Per subscriber, counted once |
| Email style | Designed templates | Plain-text-first, writer-focused |
| Automation | Customer journeys, tier-gated | Sequences plus visual automations on all paid plans |
| Monetization | Limited | Digital products, paid newsletters, sponsor network |
| Landing pages | Available | Included and unlimited |
| Growth tools | None comparable | Creator Network recommendations |
Before you switch, have this ready
- A Kit account (start free, or a paid plan if you want their migration team).
- Your Mailchimp export: subscribed, unsubscribed, and cleaned CSVs.
- A tag map — which Mailchimp audiences, groups, and tags become which Kit tags.
- DNS access to authenticate your sending domain in Kit.
- A list of every form, landing page, and integration feeding Mailchimp.
- Your current welcome sequence content, ready to paste.
Step-by-step: Mailchimp to Kit
Step 1: Export from Mailchimp with tags and signup dates
Audience → All contacts → Export Audience gives you a zip with one CSV per status. Keep the unsubscribed and cleaned files as well as the subscribed one; you need them to suppress on the other side.
Confirm the export includes the opt-in timestamp and tags. Signup date is your consent record and it lets you segment by subscriber age later, which matters more than people expect when you start selling.
If you run multiple audiences with overlapping people, deduplicate now in a spreadsheet. Kit counts a subscriber once; importing three near-identical files creates a mess of conflicting tags.
Screenshot
Mailchimp export zip with subscribed, unsubscribed, and cleaned CSVs
Step 2: Plan your tag map before importing
Write the map on paper first. Interests become tags. Lead magnets become forms with an automatic tag. Product buyers become tags you can exclude from promotional sends. Audiences usually become tags, not separate lists.
Keep it small. Ten well-chosen tags you use every week beat sixty you cannot remember. A useful test: if you cannot name a specific email you would send to a tag, do not create it.
Create the tags in Kit before importing so the import can apply them directly rather than requiring bulk edits afterwards.
Screenshot
Kit subscribers view showing the tag list
Step 3: Import subscribers into Kit
In Kit, use Subscribers → Import. Map the email, first name, signup date, and any custom fields, and apply the relevant tags during import rather than afterwards.
Import unsubscribed and bounced addresses as unsubscribed so they can never receive a send. Do not skip this — re-emailing people who opted out of your Mailchimp list is both a complaint magnet and a compliance problem.
If you are on a paid plan, Kit’s free migration team will do this step for you, including sequence rebuilds. Send them the export and the tag map; the map is the part only you can write.
Screenshot
Kit import screen with tags applied during upload
Step 4: Rebuild forms, landing pages, and sequences
Build your forms and landing pages in Kit first, each applying the tag that identifies where the subscriber came from. This is the backbone of Kit segmentation and it costs nothing to do properly at the start.
Rebuild your welcome sequence as a Kit sequence — a series of emails with delays. Then use a visual automation to connect form to sequence, and to branch on tags where it matters.
Content pastes across fine because Kit is plain-text-first; if anything, strip the Mailchimp template rather than trying to reproduce it. Emails that look like they came from a person are the format Kit is built for.
Screenshot
Kit visual automation connecting a form to a welcome sequence
Step 5: Authenticate your domain and repoint integrations
Authenticate your sending domain in Kit before the first send. Gmail and Yahoo enforce authentication for bulk senders, and a new platform without it lands in spam.
Repoint website embeds, WordPress plugins, Zapier or Make scenarios, course platforms, checkout tools, and anything using the Mailchimp API. Test a live signup on each.
Leave Mailchimp live for two weeks. Any new subscriber appearing there is a form you missed.
Screenshot
Kit domain authentication settings
Step 6: Send, then turn on the growth and monetization tools
Send issue one to subscribers who opened in the last 30 days. Compare open rate to your Mailchimp baseline, check placement in Gmail, and only then widen to the full list.
Once sending is stable, turn on the things you switched for: Creator Network recommendations for growth, and Kit Commerce if you sell products. Doing this on day one adds variables while you are still diagnosing deliverability.
Segment out subscribers who have not opened in twelve months and run one re-engagement email before deciding whether to keep paying to store them.
Screenshot
Kit broadcast report for the first newsletter after migration
Integrations you need to update
Every one of these is a place contacts or data currently flow into Mailchimp. Work through the list before you stop watching the old account — a missed form is invisible until someone complains they never got your email.
| Integration | What to do |
|---|---|
| Website and blog opt-ins | Replace Mailchimp embeds with Kit forms, each applying a source tag. |
| WordPress | Install the Kit plugin, reconnect forms, remove the Mailchimp plugin. |
| Course or membership platform | Reconnect so purchases tag subscribers in Kit for exclusion from promos. |
| Checkout tools | Repoint Stripe, Gumroad, or Podia connections to Kit. |
| Zapier / Make | Rebuild scenarios on the Kit connector and test with a live submission. |
| Lead magnets | Move file delivery to Kit incentive emails so tagging happens at source. |
| Social and link-in-bio | Update every signup link to a Kit landing page. |
| Podcast or YouTube CTAs | Update the URL you read out loud — it usually points at an old Mailchimp page. |
Troubleshooting: common post-migration problems
Subscriber count is lower in Kit than Mailchimp
Usually correct, not an error: Mailchimp bills duplicates across audiences, Kit counts a person once. Check totals against your deduplicated export before worrying.
Tags did not apply during import
The tag column was not mapped or the tags did not exist yet. Create the tags, then re-import the same CSV — Kit updates existing subscribers by email rather than duplicating them.
Welcome sequence is not firing
In Kit the form does not send the sequence by itself. Check the visual automation connecting form to sequence, and confirm the sequence is published rather than draft.
Open rates fell after switching
Confirm SPF, DKIM, and DMARC pass for the Kit sending domain, then rebuild volume from 30-day openers outwards over a week.
Emails look plain compared to Mailchimp
That is the design intent, and it usually helps engagement. If you need structure, use Kit’s minimal templates rather than pasting Mailchimp HTML.
Old subscribers are getting the welcome sequence
An import triggered an automation. Import with automation triggers disabled, and add existing subscribers to sequences deliberately.
Should you make the switch?
The migration itself is rarely the hard part — it is the automations you rebuild and the forms you forget. If the reasons in the "switch if" list above describe your situation, Kit is worth the afternoon. If you are only moving because you are frustrated with an interface, fix the emails first and keep the platform.
Read both reviews before you commit: our Mailchimp review covers what you would be giving up, and our Kit review covers what you are buying, including current pricing and where it falls short.