Sometimes, I wish there was a cancel button to instantly roll back the emails that I have sent, to avoid accidentally sending emails.
Now, I just found an “Undo Send” feature from Gmail, allows you to get emails you have sent back with a maximum of 30 seconds. Google has tested this feature in small groups of people a long time ago and now officially released it.
How to unsend emails in Gmail ?
If you would like to enable Gmail Undo Send feature, go to Settings > General tab > Stick on Enable Undo Send, and select a time period (5, 10, 20 or 30 seconds). Hit “Save Change” button before you leave to make sure all changes were saved.
The next time you click “Send” button on an email, Gmail will let you cancel that email with a simple click into “Undo”.