The Message Overview displays details about a message. If you sent the message, you will see who the message was sent to, the date it was sent, and the subject and body of the message. If you are the recipient of this message then you will see who the message was sent from rather than who it was sent to. If your Access Permissions allow you to view the sender/receiver then their name will show up as a link. Clicking the person's name will take you to the Person Overview page for that person.