What you need
A Mailchimp account with at least one Audience (list) set up.
Your Mailchimp API key from Account then API keys.
Your Audience List ID from Audience then Settings then Audience name and defaults.
Your server prefix, which is the part of your Mailchimp URL after the dash, for example us21.
Setup steps
Go to Settings then Integrations in your dashboard.
Enter your API key, Audience List ID, and server prefix.
Click Connect. Buyers who complete a purchase are automatically subscribed to that audience.
To disconnect, click Disconnect. New buyers will no longer be added to Mailchimp.
Tags applied
Each subscriber added via purchase gets the tags buyer and the product category such as digital, booking, course, or membership.
Use these tags in Mailchimp to segment buyers from non-buyers and by product type.
Reliability note
The Mailchimp subscribe call is non-blocking. If it fails, the order and access grant are not affected.
If a buyer is already subscribed to the list, Mailchimp returns Member Exists and no duplicate is created.