EMON-Outlook Confusion

From a Non-Expert: Does the In-Out EMON scan use with Outlook Really presume emails ON-A-Network versus a Stand-alone desktop receiving emails in Outlook 2002 from a POP 3 ISP server as I do? If I receive (6) emails I may see a ["1" Scanned] in EMON, but Not using MS Exchange/Mail on a Network or MS "Fax-at-Work" I don't know what role EMON plays for me, or Why a "1" Scanned even appears (I DO understand the use of an Update and a Re-scan of "Read" mail being useful, but nothing more). No posts have made clear reference to Network vs. stand-alone use and Outlook. My OS is Me. Many Thanks!