What is a list-unsubscribe header?

A list-unsubscribe header is a field in the header of an email, which adds an “Unsubscribe” link or button in the email client’s interface. This provides recipients with an easy and straightforward way to opt out of future emails, without needing to search for an unsubscribe option within the email content itself. The following is an example of list-unsubscribe header.

Sample email showing Unsubscribe button for list-unsubscribe header