Gmail adding prominent 'Unsubscribe' option to marketing emails | PCWorld

Perhaps Google will next make it possible to opt-out of the promotional non-email-message ads that are increasingly visible in Gmail's Promotions tab

"Gmail users who get frustrated trying to find the “unsubscribe” link that’s often buried in small type at the bottom of promotional emails may instead start seeing it before they even open the message.
Starting this week, a new, clearly marked “unsubscribe” link will appear at the top of the header field in marketers’ emails. Previously only appearing for a small percentage of users, the feature will now be made available for most promotional messages with unsubscribe options, Google said on Thursday. Email recipients do not need to take action for the links to appear."

Gmail adding prominent 'Unsubscribe' option to marketing emails | PCWorld