Where is the history feature in Office 365? Can I see if recipients have read my e-mail to them?
What else can I do with a message I’m writing?
You can request a delivery receipt to let you know when a message that you’ve sent has reached the recipients. A read receipt will tell you when a message that you sent has been marked as read.
- Click the option for 'Request a read receipt'
- Click 'OK'
For more information on messaging options when composing a new message, visit the O365 - Responding to Messages section.