A new stable version of Columba is now available.
Columba is an email client written in Java, featuring a user-friendly graphical interface with time saving wizards and internationalization support. Its a powerful email management tool with features to enhance your productivity and communication. So, take control of your email before it takes control of you!
Release Notes:
http://columbamail.org
Download:
http://columbamail.org/drupal/?q=node/4