Be notified when messages are delivered or read

Do one of the following:

Show To be notified about all messages

On the Tools menu, click Options.
Click E-mail Options.
Click Tracking Options.
Select the Read receipt or the Delivery receipt check box.

Show To be notified about a single message

In the message, click Options.
Under Voting and tracking options, select the Request a delivery receipt for this message or the Request a read receipt for this message check box.