Webmail allows you to access your email accounts through any web browser. You may wish to use this feature if you need to check your email but cannot currently access your own computer. Log in from anywhere to read your email and respond quickly through the Webmail feature.
1) Navigate to yourdomain.tld/webmail
2) Enter your credentials and push the button "Log in".
3) Choose between Horde and Roundcube for your Default Webmail Application.