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.

Fetchmail supports every remote-mail protocol currently in use on
the Internet (POP2, POP3, RPOP, APOP, KPOP, all IMAPs, ESMTP
ETRN) for retrieval.  Then Fetchmail forwards the mail through
SMTP or a mail delivery agent (MDA) program of your choice, so
you can read it through your normal mail client.

You may also want to install and configure a local SMTP server,
such as postfix-smtpd, as that's what fetchmail uses for delivery
by default.

1. build dependencies:
   1. libssl-devel
   2. flex
   3. rpm-build-python