How to View A Termed User's Mail with Delegate Access

Delegate Access means you have permission to view another user's mailbox as yourself. This is useful to view a termed user's entire mailbox without needing to login as the user. Delegate access can be granted by the user themselves or by a 365 admin.

Once you have been granted delegate access to a mailbox, login to Office.com as yourself, then pull up the Outlook web app on the left.

From the Outlook web app, click your initials (or profile picture) in the upper right hand corner, then choose Open Another Mailbox.

Start typing the name or email address of the user you'd like to open. **You cannot open a user's mailbox unless you have been granted delegate access.