CyberPanel Custom Rainloop Webmail Address

How would you like to change your CyberPanel Rainloop webmail access to something like webmail.example.com or example.com/webmail? The most common response to this feature was always pointing to using the default URL or installing your own copy of Rainloop in another folder/website and using that. This article teaches you how to change the access address for the Rainloop webmail that is built-in to CyberPanel!