The integration is free to use.
Get in contact with MailerLite.
With our 1-click Mailchimp Importer, your subscribers, tags, custom fields, and segments come with you in minutes.
No CSV exports. No manual field mapping. No rebuilding your list structure from scratch. Our AI-powered importer does the heavy lifting so you can start sending faster.
Quickly migrate your Mailchimp subscribers to MailerLite in just a few steps:
Connect via API key or credentials, choose which lists to import, and let AI automatically map your fields—or map them manually if you prefer
During import, you can choose how groups and tags are organized, migrate compatible segments, and control how duplicates are handled
Once complete, you'll receive a full import report, with the option to undo if needed
💡 Tip: In MailerLite, groups are the equivalent of tags in Mailchimp. When you import, your Mailchimp tags will appear as groups in your MailerLite account; your subscriber organization stays intact.
For a detailed step-by-step guide, check out our knowledge base article: How to switch from Mailchimp to MailerLite
Here's everything the 1-click importer handles for you:
API key connection: Connect securely using your Mailchimp API key, no need to share your login credentials or navigate SSO flows
AI-powered field mapping (including a quick import option): Choose the quick import path and our AI will automatically detect, match, and create all your custom fields in MailerLite
Tags → Groups: Mailchimp tags become MailerLite groups. Your subscriber organization is preserved exactly as you've built it
Segment migration: Segments based on static fields are recreated automatically in MailerLite
1-click re-import: Re-sync your data any time with one click; no need to redo the full setup
Import report: After every import, you'll see a full summary, including, total subscribers added, updated, and skipped
