Undo Send, a feature in Outlook for Windows for as long as we can remember, has finally made it to Outlook 365 for Mac in a unnecessarily limited way.
For as long as people have had email, they’ve wanted a way to take back a message they’ve sent. There are two types of going back on a sent email. There’s Recall Message which attempts to delete a sent email, an option that might work but often doesn’t.
Undo Send is different. When you click ‘Send’ an email is usually sent immediately but with ‘Undo Send’ the message put on hold for a little time before sending. During that delay, you can choose to stop the message going out.
The Send delay isn’t long, sometimes just 5 or 10 seconds. Enough for a ‘second thought’ but not much more.
Outlook for Windows has had this feature for a long time, done via a Rule applied to outgoing messages. See Delay sending a message the easy way in Outlook
Outlook.com and Gmail in a browser also have a similar ‘delayed send’ options.
Now, at long last, Undo Send is available in Outlook 365 for Mac though it’s implemented differently than in Outlook for Windows and doesn’t work for all mailboxes.
Undo Send in Outlook 365 for Mac only works for Microsoft 365 mailboxes and Outlook.com! There’s no good technical reason for that, aside from Microsoft’s bloody-minded obsession with pushing customers to their cloud services.
Delayed/undo send in Outlook for Windows works on any mailbox. Why not in Outlook for Mac? Yet again, Office for Mac customers get shortchanged.
They do say that the mailbox limitation is ‘currently’ for Microsoft hosted mailboxes only. But that’s a standard Microsoft Weasel Word™, used to deflect complaints and give false hope.
Undo Send in Outlook for Mac
Go to Outlook | Preferences | Composing | Undo Send
You can cancel a message after you’ve selected Send
Wait to send messages for … seconds.
Choose a delay of 5, 10, 15 or 20 seconds.
How to stop an email send
When you click Send, a little notice appears for the delay time you’re sent. Click the Undo button to stop the email going out.
Who gets it?
First to Office 365 for Mac Insiders with Beta v16.62 (Build 22050200) or later