Pooka is an email client written in Java, using the Javamail API. It supports email through the IMAP (connected and disconnected) and POP3 protocols. Outgoing mail is sent using SMTP.
...dedicated into Java open source projects
An opensource & freesource complete simple mail client
that focuses on security. All protocols have been reimplemented from scratch (Mime, POP, SMTP).
With a statistical spam filter, international characters & keyboard.
With global encryption for the mail data on the disk and support for optional external GnuPG.
Columba is an Email Client written in Java, featuring a user-friendly graphical interface with wizards and internationalization support.
Its a powerful email management tool with features to enhance your productivity and communication.