TMDA is an OSI certified software application designed to significantly reduce the amount of SPAM/UCE (junk-mail) you receive. TMDA combines a "whitelist" (for known/trusted senders), a "blacklist" (for undesired senders), and a cryptographically enhanced confirmation system (for unknown, but legitimate senders). TMDA strives to be more effectual, yet less time-consuming than traditional filters.
WWW: http://tmda.net/
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