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.
Fast Greylist daemon as a Postfix Access Policy Delegation Service with a variable extendable rule set. The rules are used for whitelisting, blacklisting and greylisting based on information from the SMTP dialog on a "per delivery attempt" basis.
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.
A Java library to encode and decode ASCII Strings in Base64
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.
JoeEmail - How Joe deals with Spam. JoeEMail is a lightly featured email client for windows that uses a Bayesian probability filter to detect and delete spam messages.
Linasf is a PHP implementation of a SpamAssassin-like spam filter. It uses Bayesian Filters, User-defined rules and Artificial Neural Networks to obtain excellent results. Training and integration with current PHP system is very easy. (uses MySQL as DB)
MERA is a Mailfilter developed for Outlook2k written in VBA. MERA replaces the Outlook-Rules-Wizard because it provides must more rules and actions.
MailEnable plugin that allows to limit the number of emails a domain can send per day. Usefull to avoid your own users from sending spam.
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.
Simple but handy POP3 mail monitor which checks X-Spam field
Mail Commander is a multi-user mail-notify application.It supports multiple accounts per user, customizable alerts, built in mail client, support for other mail clients, virus scan(third party app.), auto-reply, multi-protocol and mail preview and more.
Collaborative maillist filtering effort updated daily and provides filters for sendmail and spamassassin users. This project is aimed at ISPs and mail administrators. User supported and maintained. Will support other servers and filters soon.
A multiuser spam filter for IMAP servers using a simple statistical method. Training is done within any imap mail client. You simply move the mails into the right folders to train the tool. Can be installed server or client side. Using PHP(imap) + Mysql.
Mail answering machine. This is Java-based extensible framework. It takes e-mail letters from e-mail mailbox, parses them, processes some business logic depending on the content of the received letter, and sends the result back to the letter sender.
An extension for Mozilla Thunderbird which provides a graphical interface for date based message search.
MailFilter Web Utilities: A PHP based solution to analizing mailfilter's log files and editing mailfilterrc.
A user-centric Java Mailet for the Apache James mail server (a Java mail server) for the purpose of filtering spam using a naive Bayesian algorithm. As a Mailet, the filter can act upon spam as it is received over SMTP before the user gets it.
Have you create a lot of folders to categorize your email but it is difficult to find them in outlook? I write a small outlook plug-in to help you to handle emails. It prompts suggestion and help you to move email to right folder. Enjoy it.
This version is no longer maintained here, please see www.firetrust.com for the latest versions MailWasher Server is a highly accurate server-side spam filtering package with a polished, well-integrated web interface and built-in quarantine management facilities. Fully supports Windows Server/Exchange Server, Linux and Solaris.
Mailchecker will (in time) check mail for 'safe' content. 'unsafe' content (e.g. attachments that may contain viruses) will be stopped or converted to 'safe' formats.
An IMAP4 Mail Client based on LumiSoft Mail Server API. The client support online, offline and disconnected mode. The client make it possible to manage rules for filtering mail. Mail are moved in new folders based on the rules.
Web form that converts pasted rule set from thunderbird/seamonkey msgFilterRules.dat filter file into sieve rules suitable for uploading to an imap mail server and compatible with the sieve rule editor plugin for roundcube 'sieverules' (http://www.roundcubeforum.net/7-third-party-contributions/46-api-based-plugins/4878-sieverules-plugin.html)
A mail/calendar/RSS client for Windows using the .NET 2.0 framework. Support POP, SMTP, GMail, GCalendar, iCal and local calendars. MyOE include and advanced spam filter, message sorting, live query, indexed search, and many more...