Twitter to soon have "Undo Send" button The Twitter interface shows familiar "Your Tweet was sent" dialog above a new "Undo" button Friday March 5, 2021 5:20 PM, IANS New Delhi: As millions of Twitter user demand an Edit button to correct spelling errors in their tweets, app researcher Jane Manchun Wong has spotted a new "Undo Send" button that is in the works. The Twitter interface shows familiar "Your Tweet was sent" dialog above a new "Undo" button. Gmail offers a similar option for emails, where it provides a short window to stop messages from being sent after clicking the "Send" button.