Moving From Kit or beehiiv to systeme.io: Export the Right Statuses, Verify, Then Import

Export by status, keep only the confirmed subscribers who still engage, verify them, and import in tagged batches. Kit and beehiiv both hand you a CSV with a status column; systeme.io's migration guide tells you what to leave out (long-inactive, unsubscribed, spam reporters) and to run a verification tool before import. Because systeme.io plans are capped by contacts, every dead address you leave out is a slot you keep.

Sources, read 2 November 2026: Kit's how to export subscribers and why is my subscriber showing as bounced; beehiiv's exporting subscriber data; systeme.io's migration of your contact list, essential steps to import contacts and Kit alternative pages.

What each export gives you

	Kit	beehiiv
Where	Subscribers, filter by Status, select all, three dots, Export	Settings, Export Data, Export Subscribers (basic or full)
Columns	First name, email, created date, status, tags, location, attribution, custom fields	Email, status, tier; full export adds custom fields and stats
Delivery	Emailed link, valid five days	Emailed link or Historical Exports, valid 24 hours
Bounces	Hard bounce sets Bounced and unsubscribes; soft bounce stays Confirmed	Status column; check the values in your file

Step by step

1. Export everything with status, not only the active view. You need the unsubscribed and bounced rows to keep them out.
2. Split by status. Confirmed or active subscribers go forward. Bounced go nowhere. Unsubscribed can go in as Unsubscribed, never as subscribed. The suppression list merger combines bounced, complained and unsubscribed rows from both exports into one do-not-send file.
3. Cut the long-inactive. systeme.io suggests 6 to 12 months without opens or clicks depending on how often you send; the inactive subscriber finder filters on a last-activity date.
4. Verify the confirmed file on the verify page and drop the invalid results. Catch-all and unknown results are safer later in the warm-up than in the first send.
5. Shape the CSV. One header row, UTF-8, under systeme.io's 50 MB limit. The CSV encoding fixer converts a file to UTF-8 if names show up garbled.
6. Import in batches with tags. Add a source tag such as migration_2026 and your segment tags, starting with a small test batch.
7. Wait 24 to 48 hours, then ramp. Send first to the most active segment, and grow over days or weeks as systeme.io's guide suggests.
8. Rebuild automations. systeme.io says Kit sequences and templates need recreating in its own builder.

What verification can't settle

Verification tells you whether an address can receive mail, not whether the person still wants yours; that's what the engagement cut in step 3 is for. Catch-all domains accept any address, and Microsoft consumer mailboxes often don't answer single-mailbox checks reliably, so some results come back risky or unknown. And consent doesn't come from a clean result: systeme.io asks that every imported address belongs to someone who explicitly agreed to receive your email.

More detail on the destination side: systeme.io contact limits and imports and verify before switching ESPs.

Where SimpleVerifier fits

Verify the export on the verify page; the first 100 checks are free with a Google sign-in. Pro is $39 a month with the first 100,000 checks a month at full speed, then slower, never cut off. See pricing.