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.
GreenMail is an intuitive and easy-to-use test suite of email servers for testing purposes. Supports SMTP, POP3, IMAP with SSL socket support, and configurable user accounts and credentials. All in 100% Java.
WE'VE MOVED TO GIT HUB: https://github.com/greenmail-mail-test/greenmail
FalconMailer is a Java-based Mail API that can send emails quickly and efficiently. The API is easy to use and is much faster than the JavaMail. FalconMailer uses SSL.
md2smtp monitors Linux maildirs using the kernel inotify mechanism and delivers (pushes) newly arriving mail via SMTP to a destination mail server using verified SSL endpoints. Specially designed to support DynDNS environments.
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MailMessager is a customizable utility that sits on the Windows or KDE3 system tray and polls email accounts for new email messages. SSL/non-SSL IMAP, POP3, and Atom feed (Gmail) protocols supported. A notification is displayed upon receiving new email.
...Offers various notification options (unread mails in Inbox only, All Mails, or with specified labels) and alert methods (popup message, chime, blink keyboard LED). Uses IMAP over SSL.
Passenger is a powerfull and secure POP/IMAP proxy(gateway) server. It come with many plugins to adapt to your infrastructure (scalability, loadbalancing, secure with SSL, ldap or rdbm based, front-end abstraction of your infrascture).
Mobile Mail Checker is a mail client for portable devices: java phones/smartphones/PDAs. It is based on J2ME. The most important features are: POP3/IMAP/SMTP support, reading/writing/replying/forwarding mails, SSL support, multimedia attachments supported
BDMailer is supposed to be a small background application, which tell user about new messages on his/her mail account. It will implement plain text,TLS and SSL connection types and messages forwarding mechanism.
BDMailer won't a another mail client.
JMailboxMonitor helps to monitor your email addresses (POP3 protocol, SSL included), in a little window. Set your addresses and see the number of messages sent to you. When the program finds new mails, it displays a little advising message.
icarusWebMail is an open source WebMail, with POP3 and IMAP mailbox support, also supports APOP POP3/SSL POP3/TLS IMAP/SSL contacts lists from LDAP, anti-spam integration, Internationalization (by now es, en, fr), Filters, Drafts, Sent-Folder, Signature.
Easy, modular and flexible WAMP bundling Apache2/SSL, MySQL4, PHP4, Perl5.8/ASP, Python2.3, Tomcat5, FirebirdDB, FileZilla, Mail/News-Server, phpMyAdmin, Awstats, WordPress, etc. It also includes a web-GUI to control/manipulate all bundled services.
jmom is a cross platform email client, written in java and taking advantage of SWT for a faster, native look and feel. Supports imap, pgp, ssl, and filters. Also an IM Client supporting AOL Instant Messenger and MSN Messenger, and CVS Client are in the
Abstract pure java smtp server, based on MINA. Concrete implementation based on oracle as mail repository. and ldap configuration/authentication. Supports SSL and TLS.