Open Source BSD Post-Office Software

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.

A command line utility for synchronizing remote IMAP mailboxes and local maildir-style mailboxes. This is useful for working in disconnected (off-line) mode, such as on a laptop, but also for mirroring mailboxes between servers.

Fetchmail is a mail retrieval daemon that can download messages from POP3, IMAP, ODMR and ETRN-based stores, with SSL/TLS security including certificate verification, and pass downloaded mail to a local SMTP or LMTP server, or a message delivery agent such as maildrop.

Hastymail is a fast, secure, rfc-compliant, cross-platform IMAP/SMTP client application written in PHP providing a clean web interface for sending and reading E-mail. This version of Hastymail is no longer being developed. We are now working on a new version, Hastymail 3, AKA, "Cypht". http://cypht.org

Highly scalable/configurable Messaging Platform allowing users in a domain to be distributed on multiple hosts, has multiple queues. Provides virtual domains/users in MySQL. Modern MSP class qmail replacement with ESMTP, POP3/IMAP, QMTP, QMQP support

YPOPs! is an application which emulates a POP3/SMTP mail server and provides free POP3 and SMTP access to Yahoo! Mail. It does not depend on Yahoo's POP3/SMTP mail server. You can use a mail client of your choice!

FreePOPs is a webmail to pop3 conversion daemon. It is extensible to support other webmail using the scripting language LUA. See the homepage for supported webmails.

Rumble is a mail server suite for SMTP (ESMTPSA), HTTP, POP3 and IMAP4v1 with an extensive C/C++ and Lua API for scripting. It comes with support for SSL/TLS, SQLite and MySQL and has a web-based administration and webmail feature. Additional included modules feature greylisting, DNS blacklisting, SpamAssassin support and dynamic performance scaling as well as a multithreaded structure that allows for clustering of multiple servers for one or all domains, and with the ease of the Lua API, you can create your own new server mailing lists, CRM software, e-marketing and other extensions within minutes.

Convert Webmail to POP3.Is also included a SMTP/POP3 tunneling system that allow send and receive email in a private network HTTP PROXY based. All connection are plugin based. Over 450 email server supported and tested, GMAIL POP3/SMTP over Proxy Network.

Columba is an email client written in Java, featuring a user-friendly graphical interface with wizards and internalionalization support. Its a powerful mail management tool with features to enhance your productivity and communication.

ZMail allows you to send email from anyone, to anyone. You can use ZMail to send fake or anonymous emails. Have fun!

MyPhPim is A Multi-User, Personal Information Manager, including email client, addressbook, notes, todo and calendar, Written In PHP.

P3Scan is a fully transparent scanning proxy-server for email clients. It provides scanning of incoming/outgoing email messages for Virus''s, Worms, Trojans, Spam, and harmfull attachments. It can also parse messages for web-bugs.

Mailcheck is a simple, command line, configurable tool that allows multiple mailboxes to be checked for the existence of new mail messages. It supports both mbox and maildir-style mailboxes. It also supports remote POP3 and IMAP mailboxes.

New Maintainer wanted! I'm looking for a new maintainer for this project because I'm not able to attend it anymore. If you want to help please write to kuddel-fl. KShowmail is a POP3 mail checker for the KDE with these features: show number, size and more information about mails on pop3 servers in a list view, show the mail headers or complete mails, delete unwanted mail from server by configurable filters.

A small, fast, secure, anti-spam SMTP mail server (MTA). Delivery to mbox files and Maildirs supported. qwik-smtpd supports RBL, relay checking, raw/custom message handlers, and more. Custom authentication via checkpassword and a qmail-compatible configu

PyWebMail is a Python library and POP3 gateway that enable working with WebMail servers like with POP3 or IMAP mail server. Currently Mail.Com, Yahoo! Mail, Gmail, Netscape.Net, HotMail and some minor servers support is finished.

Develop cross-platform tools faster using a C++ Framework proven in commercial software. Classes support logging, sockets, RFC servers (NNTP, SMTP, POP, HTTP), object indexing, ini, tagged databases, file systems, and more. The STDNOJ Namespace, by R.A. Nagy

MOVED TO: https://github.com/fulvio999/jamesui Jamesui is an unofficial web interface to manage and monitor Apache James 3 mail server. It is written in Java and run inside Apache Tomcat.

a small, php based pop3 webmail application.

Blue HttpMail is a library that connects to HTTPMail servers (such as hotmail.com) and a proxy that allows POP3, IMAP and SMTP access to those servers. Blue HttpMail is being developed using the open source library Blue http://bluelib.sourceforge.net

Cyrus IMAPd is a popular IMAP server that surfaces a rich interface for extending its functionality. The Cyrus IMAPd Utilities project brings together maintenance utilities, graphical front-ends, and API handlers (such as notification daemons).

PHPMyWebHosting (PMWH) will provide a gui viewed in a browser, which lets you adminstrate postfix-sql-based (mySQL, PostGre) emailaddresses, Apache Virtual Hosts, DNS-zones etc. When completed, PHPMyWebHosting will provide a complete webhosting-Interface

smm is a anti-spam, mail-shaper, delete-on-server software thought for users who have a slow dialup connection and are sick and tired of downloading 1MB a day of spam and Win32-worm-attached messages.

An IMAP E-mail client for X-Windows written with GTK. Supports IMAP with and without SSL.