Dithaka is a dynamic mailing list and collaboration engine written in Java. It merges the concepts of mailing list and web forum; every message sent to the list appears as a post in the forum, and every post to the forum generates a message to the list
A J2EE mailinglist manager with a general purpose plug-in based mail processing engine. An administrative and user oriented webinterface is provided. Support for multiple mailinglists and multiple mailboxes. Java (servlet) based, requires an SQL database.