Using Usermin Webmail
To access the Usermin Webmail system, browse to port 20000 on your domain name, using the HTTPS protocol.
Login using your mailbox username and password.
Usermin provides a left-hand menu, and a right-hand content pane.
In the left-hand menu, there is a Mail tab and a Usermin tools tab. The Mail tab includes a list of available mail folders, a search box, and links for folder management, address book, mail preferences, change passwords, system information, and switch user.
The right pane displays either the active folder, mail message, or Usermin tool that has been selected in the left-hand menu.