Finding unseen messages

I'm in the process of switching my email handling over from Eudora to Apple's Mail program, and I was intrigued to discover that when Mail is checking to see if there's anything new on the mailserver, its Activity Viewer (when I choose to have it open) first displays: "Finding unseen messages." I really enjoy feeling that soon—very soon—Ancient Eldritch Knowledge in the form of Messages from the Unseen will be Imparted unto me.