Microsoft Outlook allows you to configure options for how read receipt requests are handled. When you receive an email for which the sender has requested a read receipt you can configure Outlook to ignore the read receipt request, always automatically send a read receipt or ask you email by email whether to respond with a receipt or not.

To configure the read receipt options, choose the Options option in the Tools menu.

The, in the Outlook Options dialog, choose the Email Options … button near the top of the Preferences tab.

In the Options dialog, then press the Tracking Options … button.

Finally, in the Tracking Options dialog, choose the desired option before pressing the OK button.

For more Outlook tips, see Configuring the Default Email Account in Microsoft Outlook.