Yes, Gmail's "Undo" feature allows users to recall a sent email within a brief time window after clicking "Send." After sending, a notification with an "Undo" option appears for a few seconds, giving users the chance to retract the email, make changes, or choose not to send it. The feature is time-limited and can be enabled in Gmail settings. Once the window passes, the email is delivered as usual. "Unsend" offers added control over outgoing messages, helping users correct mistakes or avoid sending messages they later regret.