In the Extension Modules section, under External Services Connections, you will also find a link to Mailchimp. Clicking on this module will display basic information about the module, the price per user per month, and the total amount for all users per month.
By clicking on green Buy module button and subsequent confirmation will make the module active.
Then we go back and click on the Mailchimp module , where we will see two options - Manage the module and deactivate it. In this case, we click on the green Manage module button :
We will move directly to the module settings, where you need to enter the Api key and Server Prefix:
