Vote for ARX POP3 Connector

ARX POP3 Connector is a Windows Service that routes your POP3 mail to your SMTP or Microsoft Exchange Server. No software is required to be installed on any client machines.

Features include: Provides server side SPAM blocking using filters, black listing and DNS verification, Works with both single and Global/Shared POP3 accounts, Uses it's own Event Log to report detailed events and errors, Remote administrative notifications allows error reporting to mobile devices, Schedule mail query by interval and by weekday, Instant manual mail retrieval function, Keep mail on host option, Able to verify Internet, SMTP, and POP connectivity.