Auto Whitelist automates the detection of safe/valid email addresses by plugging into Postfix and monitoring sent mail and building a whitelist. It then automatically tags all incoming email with information regarding the senders email address status.
Konfidi is a trust framework that uses topical trust values from a social network of authenticated people. When you receive an email from someone you do not know, but he/she is in the network, Konfidi will compute an inferred trust value for you.
MailArchiva is a powerful, full featured email archiving (email archiver) and compliance solution for mail systems such as Microsoft Exchange. It stores all incoming, outgoing and internal emails for long term storage. A web based user interface is avail
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Spamato is a spam filter system that combines several anti-spam techniques, from which thousands of users benefit. It is available as an add-on for Thunderbird and Outlook, and as a stand-alone proxy for other email clients. IMAP and POP are supported.
With Tiger Envelopes you can stop snoops from reading your email. Same email client. No extra steps. One click to install on Windows and Linux. Configures Outlook, Thunderbird, and KMail. Supports GPG, PGP, Bouncy Castle encryption.
Classifier4J is a java library that provides an API for automatic classification of text. The default (and only current) implementation of this API is a Bayesian classifier.
This library can be used for multiple purposes - as a spam filter or a blog cl
This is an open-source implementation of Elegitimizer.com's "elegitisigner" specification. An easily implemented validation mechanism to help eliminate illegitimate e-mail or Spam. Elegitisigner features a well documented web of trust model.
SPAM-Buster is a Java application for filtering SPAM based on statistical algorithms (currently Bayesian). The platform independant application can be used as graphical end-user client and additional service for mail server.
After the presentation on CeBIT 2004 fair finally available: SpamStop works as a Proxy between your Pop3-Client and the -Provider, it uses a Support Vector Machine to classfy incoming mails and automatically learns classifiers from samples of your mails.
Mailbox Sweeper is a program to connect to a mailbox, preview and delete selected messages. Useful for cleaning up mailboxes without downloading all the mails to your computer, e.g. for dialup users who do not want to download that 5MB attachment.
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.
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.
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