New Gmail Lab feature – Undo Send

The Gmail Lab team has added another new feature called Undo Send, and it works exactly like it sounds. For 5 seconds after you click Send on an e-mail, you can cancel it.

While I may only need this once in a blue moon, when I need it, I need it! My only feature request is that the undo time be customizable; 5 seconds isn’t long enough for my slow-thinking brain.