(Post Office Protocol 3) A standard interface between an e-mail client program and the mail server, defined by IETF RFC 1939. POP3 and IMAP4 are the two common mailbox access protocols used for Internet e-mail. POP3 provides a message store that holds incoming e-mail until users log on and download it.

POP3 makes the world's e-mails work. It enables ISPs, for instance, to store e-mails until the subscriber wishes to download them from the server to the PC. Usually when this happens the downloaded e-mails are deleted from the server which held them available. This is not the case with web-based e-mail services such as those provided by Hot Mail or Yahoo etc; with these the e-mails are left on the -- basically -- public server till the subscriber deletes them

With Priority Mail you can now have the benefit of both by either access all your e-mail accounts via our online webmail interface from any computer in the world with internet access and/or download the email to your own computer via any desktop email client such as Outlook Express.