Click OK to save your changes and return to your email message.Under the Read Receipts section, select Require and then enter a recipient’s email address.In the Email Options window, under the Delivery tab, select Send Read Receipts.On the toolbar, click the gear icon and select Email Options.To request a read receipt for an email message, first, open the email message in Outlook.If you want to disable read receipts for all messages in your mailbox, select the All Messages check box and click OK.If you want to disable read receipts for a specific recipient, simply select that recipient from the list in the Read Receipts dialog box and click OK.When recipients open the email message with read receipts enabled, they will be notified by Outlook and will be able to see a copy of the email that they have opened in their Reading Pane.Click OK to send the read receipts request and close the dialog box.In the Read Receipts dialog box, select the recipients for who you want to receive read receipts for this message.On the toolbar, click the Send button and select Read Receipts from the drop-down menu.

In Outlook, open the email message that you want to send with read receipts enabled.

Outlook read receipt list