Gmail unveiled yesterday a slew of new features for the Promotion Tab in their iOS and Android Gmail app. Technically some of these changes have been out for a while as early as as April of this year. In fact, Jordan Grossman,
I've created a simple tool to help you generate the markup required to display the features when your email is featured in the Top Promotions section in Gmail's Promotion Tab (Note there is no guarantee that your email will be featured).
It looks like Gmail is taking another shot at cover images for email. Rafael Viana discovered that an email in his Gmail Android inbox contained an image under the subject line of an email from Booking.com. Upon further inspection, it appears that