mail-filter/amavisd-new Interface between MTA and content-scanners
mail-filter/bogofilter Bayesian spam filter designed with fast algorithms
mail-filter/dspam DSPAM is a scalable and open-source content-based spam filter designed for multi-user enterprise systems
mail-filter/libmilter Mail filtering library utilities
mail-filter/milter-greylist milter-greylist is a stand-alone milter that implements greylist filtering
mail-filter/procmail Mail delivery agent/filter
mail-filter/rspamd Fast, free and open-source spam filtering system
mail-filter/sieve-connect Sieve Command Line Interface
mail-filter/spamass-milter Milter that pipes mail through spamd
mail-filter/spamassassin SpamAssassin is an extensible email filter which is used to identify spam
mail-filter/t-prot TOFU protection - display filter for RFC822 messages


arbor Base system (core)
net Network- and www-related applications and libraries. (core)
perl Extra perl modules (core)
alip Ali Polatel's dev repo (dev)
pyro Thomas Witt's supplemental repo (dev)