1. Fetchmail is a remote mail retrieval and forwarding utility intended for use over on-demand TCP/IP links, like SLIP or PPP connections. Fetchmail supports every remote-mail protocol currently in use on the Internet (POP2, POP3, RPOP, APOP, KPOP, all IMAPs, ESMTP ETRN, IPv6,and IPSEC) for retrieval. Then Fetchmail forwards the mail through SMTP so you can read it through your favorite mail client. Install fetchmail if you need to retrieve mail over SLIP or PPP connections. From Redhat 8.0 RPM

2. POP3, APOP, IMAP mail gatherer/forwarder (crypto-crippled binary) fetchmail is a free, full-featured, robust, and well-documented remote mail retrieval and forwarding utility intended to be used over on-demand TCP/IP links (such as SLIP or PPP connections). It retrieves mail from remote mail servers and forwards it to your local (client) machine's delivery system, so it can then be read by normal mail user agents such as mutt, elm, pine, (x)emacs/gnus, or mailx. The fetchmailconf package includes an interactive GUI configurator suitable for end-users. Kerberos IV & V, RPA, OPIE and GSSAPI support are available if the package is recompiled. SSL is provided by the fetchmail-ssl package. From Debian 3.0r0 APT