Recalling or un-sending an email is Gmail’s feature to help you avoid embarrassing situations.
Here are the essential points from the article:
- How to set up on Gmail: Undo Send
- How to un-send a Gmail in the browser inbox
- How to un-send an email in Gmail for Android or iOS
- How to get a longer “undo” period on Gmail with scheduled send
- Make Gmail work for you
You can find the instruction on how to set up here: https://www.androidpolice.com/how-to-unsend-an-email-in-gmail/.