RoundCube makes heavy use of the AJAX-framework and therefore improves the overall performance and usability.

Apart from the existing features the new webmail client offers the following functionalities:

  • Multiple sender identities
  • Basic address book
  • Find-as-you-type address book integration
  • Forwarding messages with attachments
  • Create or remove custom message folders
  • Advanced user interface
  • Spell-check

There seems to be an open issue with the opening of large messages through the web. If you face this problem, please use the the alternative webmail-client: