Gmail's new Feedback Loop and Unsubscribe Link
New Unsubscribe Link
Last month Gmail introduced a new "Unsubscribe" link at the top of emails in your inbox. The purpose of this is to make it easier for people to unsubscribe from mailing lists they're on, without searching in the email footer for the link. The more easily people can unsubscribe, the less likely they are to click the "Spam" button, which hurts your sender score.