Snapchat is a photo messaging service and mobile app that allows users to exchange photos and videos that are automatically deleted shortly after viewing. The messages are deleted both from the Snapchat servers and the receiving device. The user who sends the message can configure the delay on message deletion to be between one and ten seconds.
The service launched in June 2011 under its original title Picaboo. It started as a class project of a few students at Stanford University; as of 2015 services about 70 million messages a daily and is valued at between 10 and 20 billion dollars.