Gmail is possibly the best and most popular email service out there.
Everyone, including students to businesses, uses the free email service.
First, log into your Gmail account in which you want to cancel the mail.
Now at the top right corner, you will see aSettingsoption.
Now under theGeneraltab, you will find an option toEnable Undo Send.
You just need to opt for option of Enable Undo Send.
Once enabled,set the timeframe in the Send cancellation period.
After you have set your time limit, you need tosave these changes.
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