Each Out of the Mold client has a control panel. This can be access by typing in your domain name and adding the port "2082" to the end. For example, if your domain name is "example.com", you can access your control panel by typing in "http://www.example.com:2082/" into the address bar.
You should see something like this, where you can add email accounts, view logs, and control other aspects of your website.
If you register your own domain name, you'll need to provide Out of the Mold's two nameservers: