And for backups and archives you shouldn't rely on a single point of failure anyway. Set up journaling rules (auto-forwarding to an archive) or a similar method to store incoming and outgoing emails on a different server. There are better ways to achieve your goals here, because anything you do with POP3, you can do with IMAP too, with the added benefit of having an extra safeguard where emails remain on the server if things go wrong somehow.