Have you ever sent an angry email to someone and instantly regretted it seconds later? Or have you ever sent an email to the wrong person in a hurry? Well, now you can save yourself from such embarrassing situations. Gmail's Undo Send feature is now a core part of the popular email service. In this video, we'll tell you how you can easily setup Undo Send in your Gmail account. You'll be able to retract emails within a specific time limit though, but it's still very useful for a lot of people.