Open Source ChromeOS Email Servers

PostfixAdmin is a Web Based Management tool created for Postfix. It is a PHP based application that handles Postfix Style Virtual Domains and Users that are stored in MySQL, PostgreSQL or SQLite

DKIMproxy is an SMTP-proxy that implements the DKIM and DomainKeys standards, to sign and verify email messages using digital signatures and DNS records. It can be used to add DKIM support to nearly any existing SMTP mail server.

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.

SmartSieve is a web based graphical user interface for creating and managing sieve scripts for mail filtering and vacation messaging on a cyrus imap mail server. Written in PHP, SmartSieve is easy to configure and use.

Webkosa is the public, open source edition of the popular Webcrossing server which has been used by thousands of sites for online communities, social networks and agile Web 2.0 object-oriented development. Webkosa includes its own integrated web server, email server, ftp server, out-of-the-box forums with discussions, users and authentication, post-by-email and numerous other user and community-oriented features to get you started with development, or use as is. Webkosa includes a native object-oriented NoSQL database, which is scriptable with its enhanced server-side JavaScript. Webkosa's all-in-one architecture makes deployment easy with no "extra servers" required. By modifying and adding scripts it is infinitely customizable. Webkosa is sponsored by Elliptics, Ltd., the owner of the Webcrossing software product line, and was launched by both Elliptics, Ltd. and Bayspire, Inc.

This is a project initiated by the community around Stalkers CommuniGate Pro email server. The project is to maintain and develop an opensource WebSkin (interface) to the server. Platforms: Most UNIX's, AS/400, Windows etc. Look at Stalker.com.

CheckeredFlag is a super simple mail server. The intended use is for local application development that needs to be able to send email. CheckeredFlag runs on the local machine and doesn't need a network connection nor any special set up. Just run it and that is all. SMTP, POP, and webmail are provided, which means you can send email with any email client and recieve email with just about every email client.

Foedus Mail is a mail server written in Java. The goal is to produce stable IMAP, SMTP, and POP3 support and then to build upon and refine it.

WAP Email Server designed to take full advantage of the WAP protocol for reading email stored in a POP server from mobile devices in a fast and easy way.

The Zimbra connector for Funambol enables the Funambol synchronization platform to synchronize contact list, calendar information and task information with contact lists, calendar and task information stored on the Zimbra mail server.

HyperPool is a 100% pure Java project for network services management. TCP (HTTP/1.1, HTTPS, FTP, SMTP, POP3), UDP and SOCKS5 protocols support. Configurations: proxy, web server, mail server, download manager, port mapping.

Ichabod is an SMTP/POP3 server, with mailing list support. Administration is via a web, or email You can also use Ichabod to make your app receive email as an SMTP server. You can also easily extend it by subclassing to add your own behaviors.

TIMSm - The Isocor Mail Server monitor

This is an intranet mail server. The project is presently named JMail.

JXchange is an mail server multiplataform, written in Java language, like MS-Exchange. This project includes SMTP server, POP3 server, IMAP server, web management interface and webmail designed to run in almost all OS.

This is the Home Page for the James Administration Console, an administration utility for the James Java Enterprise Email Server. The console aims to be fast, easy to use, and completely 100% Java, just like the server.

Collection of James Mailet to administer, enrich and emprove James mail server functionalities

Apache James Mail Server hook for the famous Liferay Enterprise Portal. Uses James as mail server backend rather than Postfix/QMail/Sendmail. Easy to configure if you have production mail server(MTA) based on James.

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.

JAMS is an SMPT/POP3 mail server written entirely in Java and using an RDBMS as the backing store.

Java based mailserver providing a SMTP and POP3 protocoll implementation easy configurable, OS independent, extendible

Mail2RDF enables you to use your favourite RDF news feed (http://www.w3.org/RDF/) reader to see if new mail have arrived at your mail account. A mail server is periodically checked for unread/unseen mail, and a RDF/RSS feed is produced from this.

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.

A lightweight Java-based mail server with IMAP/Web/Mobile access and incredible classification

Mailster is a project aimed at testing software mail capabilities. It provides a mail server container to test emails sent by your apps without rewriting your application code.