You can use the Undo Send command to cancel a message before it is sent, giving you more control and confidence over your communications. While it doesn't offer true message recall, this feature instructs the app to delay sending the message for a set period of time, so you can cancel it if you change your mind.
Note
This feature is available for Microsoft 365 Subscription licenses and Outlook.com accounts.
Set up a delay before sending messages
Select Outlook > Settings > Composing.
In the Composing dialog box, select the up ^ or down v button to set the delay time (5, 10, 15, up to 120 seconds).
Undo a send message
Once you have set the message delay, you see a prompt a prompt at the bottom of Outlook each time you send an email.
Send the message.
Select Undo.
