BASIC
* Access any POP3/IMAP account
* Compose/Reply/Forward/Delete/Print mails
* AJAX user interface for modern browsers, static HTML option also available
* Administration via web interface
* Skin-based interface
* Multi-language user interface.
* Browser-safe viewer of unknown HTML mails (blocks javascript and external images)
* View and Save attachments
* All major browsers supported
* Integration with external web applications (bypass login screen)...