How to recall an email in Outlook 365?

I sent an email with a mistake in it using Outlook 365. Is there any way to recall or undo it?

Go to Sent Items > open the email > click "Actions" > "Recall This Message". It only works if the recipient hasn’t read it and is using Outlook too.

It won’t work for Gmail or external addresses. Always double-check before hitting send or use "Delay Delivery" next time.