'Undo Send' By Gmail

Like most of us have done it, sometimes we hit "reply all" by accident and sending a potentially embarrassing or insulting message to unintended recipients. "Undo Send" is one of dozens of creative online features developed at Gmail Labs to address common e-mail problems.

"Undo Send" will give users a chance to rewrite their message, correct settings or simply fix typos. When a Gmail user who enables this feature sends an e-mail, a button that says "Undo" will pop up on their screen for five seconds. If the user hits the button within that time, the service will retrieve the e-mail in draft form -- allowing the user to make changes or cancel the message altogether.

So here we are, no more mistakes now as "Undo Send" will save you every time.