How Does Gather Integrate with Mailchimp?
Gather syncs with Shopify, which in turns syncs with Mailchimp when you have the Mailchimp for Shopify app.
It works seamlessly. All you have to do is activate Syncing feature in the Integrations section.
Do you have the Mailchimp app or Shopify?
Hope that helps :)
Let me know how I can further help through the in app chat or by contact us on firstname.lastname@example.org.