Vote for POPcon
POPcon Exchange POP3 and IMAP Connector connects your mailboxes to your Exchange™ or Lotus Domino™ Server.
POPcon periodically downloads your emails from POP3 and IMAP mailboxes and distributes them to exchange mailboxes according to the recipient information found in the mail headers. It supports multiple domains and multiple POP3 as well as POP3-SSL, IMAP and IMAP-SSL mailboxes of both single-drop and multi-drop type.