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Hedwig is an open source IMAP, SMTP, POP3 server written in Java, designed with ease of installation and configuration in mind. Hedwig enables storage of mail message headers in a relational database(MySQL or Oracle) and mail messages in a file system.
Visit http://hwmail.sourceforge.net/ for more information.
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.
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.
Simple mail server emulator for developers. POP3 emulator. SMTP emulator The server is designed to accept all messages for any email accounts. It is necessary for testing web applications and software applications
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.
Jsmtpd : A small and modular smtp email server daemon, written in Java. Jsmtpd is heavily based on plugins, and supports : spam detection (Spamassassin, Jasen, RBL servers, BlackList), anti virus (Clam Antivirus), and many others filters.
Vaza-Mail Server is open source mail server which provides SMTP and POP3 server implemented in 100% Pure Java. It is a pure Java Implementation using J2EE.
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.
Quick Mail Project is Mail Server with Web mail. The project is independed platform support designed Using Java ,C, PHP ,MySQL database . Its support RFC SMTP protocol , RFC Internet Message, Multi domains, forward, block, spam bulk and a lot more.
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.
Welcome to the project page of the Open JMail Server - a scalable Java email server. Features POP, SMTP, IMAP, dynamic pluggable storage design, modular protocol handling, easy XML configuration and much more.
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.