Social media continues to evolve. Facebook is testing out an "Unsend" feature on its Messenger app. According to TechCrunch, users would be asked if they want to unsend a message within a limited time after a message is sent. This "unsend" option would then delete the message from both the sender and receiver's inboxes, similar to Gmail's "Undo Send" feature. Facebook Messenger users will only be allowed to unsend their messages after a certain amount of times. Facebook announced plans for the "Unsend" feature in April after TechCrunch reported that messages sent through Messenger by CEO Mark Zuckerberg and other executives later disappeared from recipients' inboxes.