You can use the Mail Menu to access one of the three web mail programs included in cPanel. These programs will allow you to read your email through a browser window without having to make any changes to the computer you are on or leave any email on the computer you are on.
If the cPanel account that you are logged into is also a reseller account, you can access your reseller Web Host Manager interface from your cPanel interface. To access your reseller Web Host Manager interface, click on the icon above the words Web Host Manager on the main screen of your cPanel interface. A new browser window will appear containing your reseller Web Host Manager interface.
This function allows you to see the bandwidth usage for your site. It shows the current month's bandwidth usage as well as your total bandwidth usage. This will include all HTTP (web) and POP (mail) bandwidth usage and may include FTP bandwidth usage if your system administrator has enabled FTP bandwidth logging.