Here you can manage your customers access to your default Mailchimp email list, as well as adding and removing tags.
Tags are setup and managed in your Mailchimp account, and are unique to each email list. They're used for segmenting your emails. For example, you could send a special offer to members on a specific membership plan.
If the customer is already subscribed to your default email list, then they will automatically be tagged when they begin and end a membership.
Here are the tags that are applied, and when.
If the customer is not a current subscriber, a form will appear that will allow you to add them.
Once the customer has been added, you can add tags to the customer. You can manage adding and removing tags within Mailchimp. A future release will include tag management.
Using the menu dropdown, you can unsubscribe and resubscribe the customer.