Use cPanel
To access cPanel, perform the following steps:
1) Access your Webmail over an encrypted connection with your domain name, as one of the URL:
2) Enter your cPanel username and password.
3) Log in to cPanel.
Use Webmail account
To access Webmail, perform the following steps:
1) Access your Webmail over an encrypted connection with your domain name, as one of the URL:
2) Enter your username and password.
3) Log in to Webmail.
P/S: You can access Webmail directly through your browser or log in to Webmail through the cPanel interface.