Some AWeber users move to Mailchimp for its broader integration ecosystem. The platforms are broadly comparable in capability. Note that Mailchimp has been raising prices. It is worth comparing costs at your list size before committing.
This guide covers everything you need to migrate from AWeber to Mailchimp without losing subscribers or breaking your automations. Estimated time: 2-4 hours.
What transfers and what does not
| Item | Transfers? | Notes |
|---|---|---|
| Contacts and email addresses | Yes | Via CSV export/import |
| Tags and segments | Partial | Export as custom fields, remap on import |
| Custom field data | Partial | Transfers if mapped correctly during import |
| Unsubscribe history | Yes | Import as suppressed contacts |
| Email templates | No | Need to be rebuilt in Mailchimp |
| Automation workflows | No | Need to be rebuilt from scratch |
| Campaign history | No | Historical stats stay in AWeber |
Step-by-step migration guide
Sign up at www.mailchimp.com before doing anything else. Keep your AWeber account running throughout the migration: do not cancel it until everything is confirmed working in Mailchimp.
Add your domain to Mailchimp and follow the DKIM authentication instructions. This improves deliverability and ensures your emails arrive in inboxes, not spam folders. Complete this before importing any contacts.
In AWeber, go to your audience and export your full contact list as a CSV. Make sure to include all custom fields, tags, and segments. Export your unsubscribed contacts separately: you will need to suppress these in Mailchimp to stay compliant.
Upload your CSV into Mailchimp and map each column to the correct field. Import your unsubscribed contacts as suppressed. Review the import report carefully before proceeding: fix any mapping errors before building automations.
Screenshot or document all your active automations in AWeber before rebuilding them in Mailchimp. Start with your highest-priority flows: typically your welcome series and any active nurture sequences. Do not activate them until you have tested them with your own email address.
Build your signup forms in Mailchimp and replace the AWeber embed codes on your website. Test each form to confirm subscribers land in the right list and trigger the correct automation.
Send a test campaign to yourself. Trigger your automations manually. Check every link. Confirm your unsubscribe flow works correctly. Only cancel AWeber once you are fully satisfied that Mailchimp is working as expected.
Once Mailchimp is fully operational, cancel your AWeber account. Check your billing date to avoid being charged for another month. Download any historical reports or data you want to keep before cancelling.
The bottom line
Mailchimp makes sense if you need its specific integrations or want a more widely recognized platform. AWeber and Mailchimp are broadly comparable in capability: you will not gain dramatic new features, but you will get a larger ecosystem.
Not sure Mailchimp is the right destination? Take the Marketing Automation Buyer's Guide quiz for a personalized recommendation.