To connect, choose Sign in with Microsoft in HawkOpen, or enter the IMAP and SMTP details of your mailbox. Emails you send from the dashboard go out through your own mailbox, and each recipient gets a separate copy with their own tracker.
You then see every image load and click with a category. When Outlook.com loads the image through Microsoft’s image server, HawkOpen marks it as proxy cache (R-OPEN-MSPROXY) rather than as human activity. Outlook’s own read receipts are a separate feature that works without HawkOpen.