Gmail trick you need to know that can avert a mistake.

The Undo Send feature is something that Google talked about implementing last year. However, you can now try it out for yourself on regular old Gmail by following these simple steps.

STEP ONE: click on settings button on the right.

STEP TWO: scroll to labs while in settings.

STEP THREE: under some crazy experimental stuff scroll down carefully until you see the undo send feature and click on enable.

FINAL STEP: send a message to test feature.

Click undo and you get to start afresh or add what you left out.

Please let us get comments if you tried it.