Most people have sent an email or two they later regretted—either to a boss, a friend or an ex. Gmail is now offering a safeguard: its new “Undo” feature puts a five-second hold on all outgoing mail. Although the new feature can’t withdraw mail that’s already gone out, the hold does provide a window to withdraw messages after hitting the “Send” button, bringing users back to the “Compose” screen, Wired reports. (Doing nothing means the email will send after five seconds.) Gmail users can turn on the new feature by hitting “Settings,” and then the “Labs” tab.