How to request a read receipt in Microsoft Outlook and know when someone has opened your email

While drafting your email, you can request a read receipt in Outlook to inform you of when your recipient opens your message.
Digital Journal

Outlook users most worried about retrieving sent emails

‘How to unsend email outlook’ is searched for 4,200 times monthly in the UK, 28 times more searches than Gmail for the same function. It is also of interest that generic searches for ‘how to unsend ...