Fetchmail is a free, full-featured, robust, well-documented remote-mail retrieval and forwarding utility intended to be used over on-demand TCP/IP links . It supports every remote-mail protocol now in use on the Internet: POP2, POP3, RPOP, APOP, KPOP, all flavors of IMAP, and ESMTP ETRN, ODMR, SMTP, LMTP, and local delivery agents.

Fetch mail from a POP, IMAP, ETRN or ODMR-capable server, see the section called "Mail user-agents".

Fetch mail from a POP, IMAP, ETRN or ODMR-capable server, see Section 10.2.2.3.