dovecot : An IMAP and POP3 server written with security primarily in mind ( http://www.dovecot.org/ )
fetchmail : the legendary remote-mail retrieval and forwarding utility ( http://www.fetchmail.info/ )
imapsync : A tool allowing incremental and recursive imap transfer from one mailbox to another ( http://ks.lamiral.info/imapsync/ )
mailbase : MTA layout package ( http://www.gentoo.org/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a argent-main
For Paludis use this rsync : rsync://gentoo.zugaina.org/argent-main-portage
If you have a problem : ycarus(-at-)zugaina.org