ftp://ftp.lug.udel.edu/pub/macports/dpupdate1/ports/mail/  direct

[DIR]abook/  direct  630+ twin directories
[DIR]archivemail/  direct  560+ twin directories
[DIR]alpine/  direct  500+ twin directories
[DIR]altermime/  direct  390+ twin directories
[DIR]anubis/  direct  530+ twin directories
[DIR]archmbox/  direct  390+ twin directories
[DIR]assp/  direct  95 twin directories
[DIR]base64/  direct  260+ twin directories
[DIR]bincimap/  direct  440+ twin directories
[DIR]bmf/  direct  200+ twin directories
[DIR]cclient/  direct  57 twin directories
[DIR]deletemail/  direct  9 twin directories
[DIR]dovecot/  direct  690+ twin directories
[DIR]getmail/  direct  1000+ twin directories
[DIR]gmime/  direct  500+ twin directories
[DIR]gnupg2/  direct  750+ twin directories
[DIR]libetpan/  direct  520+ twin directories
[DIR]libidn/  direct  1000+ twin directories
[DIR]libvmime/  direct  350+ twin directories
[DIR]mailman/  direct  1000+ twin directories
[DIR]mb2md/  direct  450+ twin directories
[DIR]mixminion/  direct  290+ twin directories
[DIR]nail/  direct  640+ twin directories
[DIR]offlineimap/  direct  560+ twin directories
[DIR]pflogsumm/  direct  470+ twin directories
[DIR]postal/  direct  650+ twin directories
[DIR]postfix/  direct  1000+ twin directories
[DIR]postgrey/  direct  640+ twin directories
[DIR]signing-party/  direct  470+ twin directories
[DIR]spambnc/  direct  58 twin directories
[DIR]spamprobe/  direct  610+ twin directories
[DIR]base-64/  direct  4 twin directories
[DIR]biabam/  direct  430+ twin directories
[DIR]cyrus-imapd/  direct  700+ twin directories
[DIR]dspam/  direct  570+ twin directories
[DIR]fetchmail/  direct  1000+ twin directories
[DIR]hello/  direct  750+ twin directories
[DIR]hypermail/  direct  670+ twin directories
[DIR]lbdb/  direct  600+ twin directories
[DIR]libesmtp/  direct  510+ twin directories
[DIR]libsieve/  direct  480+ twin directories
[DIR]listat/  direct  7 twin directories
[DIR]lmtp2nntp/  direct  60 twin directories
[DIR]lurker/  direct  490+ twin directories
[DIR]GNUMail-Aqua/  direct  3 twin directories
[DIR]aardmail/  direct  4 twin directories
[DIR]bogofilter/  direct  750+ twin directories
[DIR]clamsmtp/  direct  500+ twin directories
[DIR]claws-mail/  direct  450+ twin directories
[DIR]courier-imap/  direct  210+ twin directories