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-- DISCONTINUED! see Homepage -- SpamCruncher is a small Perl-Script, that uses the SpamAssassin-engine to identify spam on remote POP3- or IMAP-Servers. So you only need SpamCruncher if your E-Mail host doesn't offer you free anti-spam services.
The Spam Secretary is an anti-spam email filter based on the article at http://www.paulgraham.com/spam.html. It is written in python and is easy to install. It is mailclient independent, and the hope is that it will be MDA independent as well.
TarProxy is a Statistically-Driven SMTP Tarpit. TarProxy calculates the probability that an incoming mail is spam, and uses that information to control a variable-viscosity tarpit for each connection.
You can filter your email using a bayesian like statistical method. Written in 100% Python, easily extensible, and is used as a pop3 proxy to reduce the intrusion on your system.
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Proxy/pseudo-server for use on client computers for spam/virus checking. Designed to work with SpamAssassin, Razor, or any other system which has similiar functionality.
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The MFlow project aims to create a modular messaging client in Java. Its architecture should make it as easy as possible to add support for new protocols, as well as maximizing configurability.
JFetch is an application to download your email through protocols like POP3 and IMAP. The decision of whether to download a mail or not is made through a sequence of filters. The user can easily add customized filters to this sequence.
Very small utilities that encode/decodes files into/from base64 respectively. Completely written in Pure Pascal (from version 2) they should compile in every Pascal compiler known to man.
SpamAssassin is now a part of the Apache Software Foundation. Our code, web site, and mailing lists (in other words, everything) are now part of the Apache SpamAssassin project. All code that remains here is old unsupported and not Apache.
Web based control of spam filters, allowing individual users to \'override\' global filters, viewing of filtered mail, submission to global filters, with scripts to remove known spam from spool files,
This project uses ICQ-style logic against a POP3 mailbox. Any incoming mail is checked against known users. Any not found can be either a) sent a "request authorization" form, b) ignored, or c) deleted.
Converts Outlook .mbx and .dbx files into standard RFC822 mail files. Mailboxes from newer versions of Outlook and Outlook express may not be supported.
JEM is an SMTP server with pluggable components that let you
process email in any way you like. It can also extend beyond
emails into generalised message processing (like JMS) and can
even generate its own messages based on a Cron-like facility.
The goal of the rfc822 project is to create a C++ library for parsing and filtering email data as defined by RFC822 et.al. The goal is not, however, to replace any of the commonly used unix tools used in that area. Instead it should establish both a playg
Deep Six is a client side spam filtering tool that monitors your inbox for new email and filters it. The modular filter plugin-system allows for greater spam detection. Currently supports SpamBouncer, Vipul's Razor and DCC.
JaMaRe (JaMaRe ain't a Mail Reader) has grown out of my own need for a hacker's mail filter. JaMaRe has it's own internal mail folder system, and a very extensible filtering system. JaMaRe can also be used as Mail Router.
Antispam, antivirus, authenticating SMTP daemon. Integrates with qmail, sendmail, stunnel, etc. It's simple Perl, so you can hack it to suit your needs. Supports RBLs, mx on from, bounce evil phrases, virus scanning...
POP3 Spam Filter Proxy is a multiuser POP3 proxy written in Java. Other than most other email filtering programs it works passively and transparently each time a user checks her or his mailbox. The filters so far are be based on regular expression searche
A mail filtering tool that uses PerlMX to allow fine-grained spam filtering controls. Utilizes host-based blocks as well as heuristics. Can be modified to use Sendmail::Milter.