Make a typo in your email? Forget to add a recipient? Change your mind about sending an email?
Take back an email you just sent using the Undo Send feature.
Gmail Instructions
Navigate to Settings
Select ‘Enable Undo Send’
Select send cancellations period
Save Changes
Now, when you send an email, a notification will show at the top of the screen and you can select ‘Undo’ to unsend.