Like everyone, I sometimes send messages that should have stayed in my head. Being impulsive is in the nature of human beings, and to prevent people from blundering, the only thing needed is often a bit of time.

So to help users with their impulsiveness, the folks at Google Labs have released Mail Goggles, a new Gmail feature that will give you the extra time needed to think twice before sending a potentially compromising email. It accomplishes its function by asking you a few math questions before your email is sent on its way, making sure you have plenty of time to reconsider your decision.

By default, when activated, Mail Goggles only works late at night during the weekend, but you can customize it to work whenever you want via Gmail’s “General Settings” section.