How to send messages and use the Undo Send feature in Gmail

If you make a typo or change your mind about sending an email, you can take back an email using the Undo Send feature.

To undo sending emails:

1. Send your email.
2. Click Undo at the top of the page.

Depending on your settings, there’s a limited amount of seconds to click Undo before it disappears.

To make sure Undo Send is enabled, or change settings:

1. In the top right, click Settings  and select Settings.
2. Click the General tab.
3. Scroll to Undo Send and check the Enable Undo Send box.
4. Set the cancellation period.
5. At the bottom, click .