Once enabled, it might help you save your job or your marriage by letting you un-send a message - but only for at most 30 seconds. Since gmail is so widely used, this is a big deal. Google's gmail client recently added an 'Undo Send' feature. There must be something really juicy in the note. Personally, when I get a notice that someone wants to recall a message, it just makes me want to read it all the more.

Some current email programs have a feature that let's you ask to take back a message.

This feature no doubt saved many a career. If they hadn't read it yet, they'd never know any better. Even if the message made it to the recipient's Inbox, it could be yanked back. Many years ago, I used a mainframe email program that let you retrieve email you sent. That's the way most email programs work, but it doesn't have to be this way. But it's too late, the email has been sent. Then, a moment later, you're in a panic, wondering how you could have said such things. You quickly draft an emotional email and hit 'Send.' It feels good to have got things off your chest.

Undo in gmail draft