Open Source C++ Email Spam Filter Software

E-MailRelay is a simple SMTP proxy and relay MTA, written in C++, for Linux and Windows. As a proxy all messages can be passed through a user-defined program, such as a spam-filter, which can drop, readdress, or edit messages as they pass through.

The Courier mail transfer agent (MTA) is an integrated mail/groupware server based on open commodity protocols such as ESMTP, IMAP, POP3, LDAP, SSL, and HTTP. Courier provides ESMTP, IMAP, POP3, Webmail, calendaring, and mailing list services.

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

Fast, intelligent, automatic spam detector using Paul Graham style Bayesian analysis of word counts in spam and non-spam emails. Filtering adapts to personal tastes automatically. No manual rule creation required. Intended for use with procmail, maild

Mailfilter is a flexible utility for UNIX (-like) operating systems to get rid of unwanted spam mails, before having to go through the trouble of downloading them into the local computer. It offers support for one or many POP accounts.

Fix incorrect charset information in Content-Type MIME headers of e-mail messages.

SimpleCheck is a fast, low resource, server oriented, Windows System Tray based E-Mail Notification Client with a simple UI that regularly checks multiple POP3 E-Mail accounts. Many full client features; immune to viruses; use to delete SPAM mail.

Método y Sistema de voto electrónico vía e-mail utilizando par de claves asimétricas PGPl.

OpenSIQServer is the first OpenSource email sender reputation system, the efficiency is comparable with commercial software (more of 85% of spam email identified, less of 0.0001 false positive).

Source code for be able to use Relation Tags. It is part of project VocabularyMem but can be used separately. Relation Tags are tags which can be relationed together . For example tag "Paris" and tag "France" can be relationed with a relation "is part of". This code is created from 0 and is able to define which type of relation we use, using most elemental mathematic properties. It is strongly recommended to read "Relation Tags guide for programmers". Inside source zip, also contains dialogs for set properties of this extended tags. All this dialogs files finish either with "...dlg.cpp" or ",,,dlg.h". Please read "readme" file. It is recommended to use a binary matrix class like BinMatrix in order to have enough speed for calculations of implicit relations in a system of bogus tags with big data. Need to be compiled with C++11 and Qt libraries

An email client which basically focuses on sorting incoming emails for better email management using classification algorithms. Implemented for windows platform. The e-mail client focuses on inbox management, categorization of e-mails usig algorithms

libmilter++ is a C++ wrapper library for the Sendmails Milter mail filtering API. Its purpose is to facilitate object oriented programming of Sendmail mail filters in C++.

mapSoN is a spam filter for Unix that is installed via the system's ".forward" mechanism. The filter uses a challenge-response scheme to build a white-list of known senders, who may pass the filter without being challenged.

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

Had it with junk mail? Annoyance-Filter sifts mail you wish to read from junk arriving in your mailbox by an adaptive process which gives priority to mail you're interested in reading and evolves to block cleverly disguised junk mail.

Bayesian filter to get rid of spam mails, designed for use with Exim.

This project aims to be a personal data storage and administration system. It will be an advanced system for information and electronic mail management. The server will be accessible to any IMAPv4 compatible mail client.

E-mail greylisting system implemented as a freestanding executable suitable for use with Exim 4, using MySQL database back-end.

This is a milter which scans emails with CRM114

Chainmail is a Sendmail mail filter (milter) that manipulates emails that pass through Sendmail server in various ways. Under control of its configuration file, chainmail can reject messages, change their headers and bodies, add and remove recipients.

ClamCour is a Courier-MTA multithread filter that allows Courier to scan mail for viruses using Clam Antivirus package.

ClamCour is a Courier-MTA multithread filter that allows Courier to scan mail for viruses using Clam Antivirus package. Attachments can be "quarantinated" and custom domain-based email reports can be sent.

DNSBL6d is a new RBL server that will be lightweight with IPv6 capiblities, MYSQL intergration, and other features. Your suggestions are welcomed.

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.

FiPPS is a simple POP3 proxy server for Windows which scans mail headers with regular expressions for spam/mailworms and deletes the mails without downloading them.