I recently discovered a button in my Gmail that linked to a new album on Spotify before I even opened the email.  I found it strange that GMail would promote a competing service, so I looked into it and discovered the following feature / explanation.  Pretty cool. #webdev #marketing #programming

Quick Actions Allow Gmail Users to Convert Before Opening – Litmus
May 30, 2013. Quick Actions Allow Gmail Users to Convert Before Opening. [ 6 By Justine Jordan. Gmail recently announced a new feature, called “Quick Actions,” that will allow users to perform actions right in their inbox without needing to open emails first. In the mind of an email marketer, …