Gmail: Enable Undo Send
from Eric Curts at Control Alt Achieve
Yes, there's a way to undo a sent email in Gmail!
- From your Gmail account, click on the gear icon and choose Settings
- On the General tab of the settings screen, scroll down to the Undo Send section
- Check the "Enable Undo Send" box
- Choose the number of seconds you'd like to be allowed to cancel your message
- Don't forget to scroll down and Save Changes
Now when you see the pop-up window, you'll have the opportunity to click Undo.
Once you undo the message from being sent, you'll be returned to normal edit mode.