After what seems to have been the longest beta period ever, Google has finally graduated Gmail’s “Undo Send” option from labs into a permanent spot.
When you enable Undo Send, you’re able to “unsend” an email up to ten seconds after you hit the send button — Gmail just delays sending briefly so you have a moment in case you change your mind.
To enable Undo Send:
- Click the gear in the top right .
 - Select Settings.
 - Scroll down to “Undo Send” and click Enable.
 - Set the cancellation period (the amount of time you have to decide if you want to unsend an email).
 - Click Save Changes at the bottom of the page.
 
								
															
											
															
															