Yahoo Messenger runs on iOS, Android, via browsers and Yahoo Mail on the desktop. The app focuses on sending pictures. Thus, many photos are sent once so that all recipients receive them at once. The pictures are not stored directly on the device, to avoid filling up storage.It is also possible to withdraw messages sent and pictures, so that they move out of the conversation. When moving messages can gifs from Tumblr are added. Yahoo sees the gifs new emoji 's.