<p>When you send a no-take-backs emailmaybe an admission to a secret crush, or accidental reply-allthere's an instant pang of regret. It feels like there's no going back.</p><p>Meet Gmail's Undo Send feature, a lifesaving little hack buried in the Gmail Labs settings. It gives you a 10-second window to "undo" sending an outgoing email. You just have to enable it first.</p><p>1. Click the gear icon in the top right corner of your Gmail window and select Settings from the dropdown menu.</p><p>Gmail screenshot</p><p><a href="http://www.slate.com/blogs/business_insider/2013/12/04/how_to_undo_in_gmail.html">Keep reading...</a></p><p>Read also:</p><p><a href="http://metro.co.uk/2013/12/06/prone-to-sending-emails-to-the-wrong-person-the-hidden-gmail-feature-that-unsends-messages-4220402/">Prone to sending emails to the wrong person? The hidden Gmail feature that ...</a> (Metro)</p><p><a href="http://www.dailymail.co.uk/sciencetech/article-2518644/Revealed-The-hidden-feature-lets-UNSEND-Gmail-quick.html">Revealed: The hidden feature that lets you UNSEND a Gmail (but you have to be ...</a> (Daily Mail)</p><p><a href="http://www.seattlepi.com/technology/businessinsider/article/Here-s-How-To-Undo-A-Sent-Email-In-Gmail-5034194.php">Here's How To Undo A Sent Email In Gmail</a> (Seattle Post Intelligencer)</p><p>Explore: <a href="http://news.google.com/news/more?ncl=d4T0yeY3mFp1IvMs6CxKkpYO71z7M&ned=us">22 additional articles.</a></p>