How do I migrate from Mailchimp to Klaviyo?

Export your lists and suppressions, connect your store, set up domain authentication, rebuild your key flows and warm up sending in stages. Run both briefly if needed so nothing goes dark.

Bring over consent status and unsubscribes, not just addresses. Sending to people who opted out is a legal and reputation risk.

Rebuild the core flows first: welcome, cart abandonment and post-purchase. Move send volume gradually, starting with your most engaged contacts.

In practice.

A store exports its list with unsubscribes, connects Klaviyo to its shop, rebuilds three flows and sends its first campaigns to engaged contacts before moving the whole list.

Want this handled for your store? See our klaviyo email marketing service or book a free audit.

Guides that go deeper.

Find out what your list is actually worth.

We review your flows, list health, authentication records and last ninety days of performance, then send back what we found.

30 minutes, no obligation, and the findings are yours to keep either way.