/net-mail/
../
amavis
balsa
checkpassword
courier-imap
dot-forward
evolution
exim
fastforward
fetchmail
gotmail
kbiff
lbdb
mailbase
maildrop
mailx
mutt
nail
nmh
pine-maildir
pine
postfix
procmail
qmail-pop3d
qmail-sumo
qmail
signify
spruce
squirrelmail
ssmtp
sylpheed
teapop
tnef
vlnx