Go to your website address in any browser and then add ‘ /webmail ‘ at the end of the url at the top of the screen.
For example: https://www.greenlightwebsites.com/webmail
Note: You may need to click OK or Continue thru any security warnings. Then type in your email address and email password to get to the control panel. From there you can choose from 3 different email browsers – the most commonly used is “roundcube”.