You can easily migrate your subscribers from Mailchimp to Ghost in just a few clicks, using the Mailchimp migrator in Ghost Admin.
Run the migration
The Mailchimp migrator allows you to quickly import members from your Mailchimp to your Ghost publication. You can access the migrator tool from the Settings → Advanced → Import/Export area of Ghost Admin.
It's helpful to log in to your Mailchimp account before running the migration in Ghost Admin.
1. Export subscribers
Next, it's time to import your Mailchimp subscribers. Click Open Mailchimp Audience, and click Export Audience.
Once downloaded, select Click or drag file here to upload and navigate to the text download, and click Continue.
Ghost will confirm the number of subscribers that will be imported to your publication. If satisfied, click Import subscribers to begin the import of your data.
After a few moments, you'll see a confirmation message, confirming that your data was successfully migrated to your Ghost site.
If you encounter issues, and you're a Ghost(Pro) customer, reach out to our support team for further advice, or head to the forum for community support if you're self-hosting.