You can choose one of three email clients to read your email from the internet. They are:
Squirrelmail. This is simple, basic, text based email. Nothing fancy at all.
Roundcube. A little fancier than Squirrelmail, offers HTML and graphics support.
Horde. A full featured email client that additionally offers calendars, task management, email filtering, notes
You can use them interchangeably, you’re never locked into one if you’ve selected it for use. Each of them provides an autoload feature which will automatically take you to the email client front page.
The URL to access your email is https://fortunafire.com/webmail. A link is also located on the website’s home page.