With our recent Parallels Plesk upgrade, the default webmail client Horde has also been upgraded to version H5 (6.1.6). Customers using this webmail service will notice a very different user interface and so if you need help with using the new version, please contact us . If you prefer a different webmail, we also have the Atmail Open webmail interface available on this server and can switch this on for your domain. However, we recommend Horde because AtmailOpen is no longer being developed.