You can add your own unsubscribe link, use Mandrill's unsubscribe merge tag, or use an automatic unsubscribe footer.
Mandrill automatically adds a List-Unsubscribe header to all emails that include a Mandrill-generated unsubscribe link. If recipients use an email program that supports the List-Unsubscribe header (like Hotmail, AOL, or Yahoo), they can use the option in their email program to unsubscribe.
Add a Link with the Unsubscribe Merge Tag
The merge tag consists of the word UNSUB, followed by a colon, and then a full website address (with http:// or https://). Recipients will be redirected to this website address when they click the link, so it should be an existing page on your site. Here's an example:
The redirect URL will be appended to include two query string parameters that can be used for processing the unsubscribe in your own system or database:
- md_id: The _id, as provided in the API call and webhooks of the specific message where the unsubscribe link was clicked
- md_email: A URL-encoded version of the recipient's email address
Add an Automatic Unsubscribe Footer
The footer can be added in your Sending Defaults or using Rules. The footer includes information about the address the email was sent to, along with an unsubscribe link. You do not need a website to process these unsubscribes. Mandrill will direct the recipient an unbranded web page confirming that the recipient address has been unsubscribed.
When someone unsubscribes using a Mandrill unsubscribe link, the information is sent back to Mandrill to process . The message status is changed to Unsubscribe, and a sender-level rejection is added for that recipient address.
While the email is on the Rejection Blacklist, if you're using the same 'from' address on emails sent through Mandrill, any emails sent to that recipient will be rejected. The rejection is temporary, and in many cases it doesn't make sense for people to unsubscribe from transactional emails. However, this allows senders to get feedback about how people are engaged with their emails and the rejection prevents continued sending to someone who has signaled they don't wish to receive more emails.
You may remove an email address from the Rejection Blacklist list for a small reputation hit. Recipients shouldn't be removed in bulk from the rejection list since they're there because of a bounce, unsubscribe, or abuse complaint. Mistakes happen, or recipients don't always understand, so removing recipients from the rejection list is possible.
*|UNSUB|* merge tag would need to be modified to include a URL for the Mandrill unsubscribe merge tag if you're already using a Mailchimp template.