You may access webmail, by going to http://www.yourdomain.com/webmail/ after your domain has propagated. Note: Please replace "your domain.tld" with that of your actual domain name. Prior to propagation, you can still use webmail by going to http://server.hostname.tld/webmail/ The hostname of your server should be in your setup email.
Alternatively you can log into your cPanel & enter through the webmail link.
You can read your online e-mail using NeoMail, Horde, or SquirrelMail. All of these popular web mail applications allow you to read your e-mail, save them, keep an address book, and perform all of the other basic e-mail functions that you are used to. The main difference between web mail and an offline e-mail applications, such as Eudora or Microsoft Outlook Express, is that all of these functions are performed online, rather than on your own computer, and offline applications generally provide more features. Web mail is optional. You can still use your favorite offline e-mail applications, if you prefer. You can even use a combination of web mail applications and another tool - you can check your e-mail online, perhaps when you're at work, and download your e-mail to your computer when you get home. You can automatically configure Outlook Express, or manually configure other mail applications to read your e-mail offline.
Accessing web mail
Overview
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.
Steps
1 To access the Mail Menu, click on the icon above the word Mail on the main screen of your cPanel interface.
2 Click on the words Web Mail to enter a screen where you can select the mail program you wish to use.
3 Click on the icon of the mail program you wish to use. More information on the benefits of each mail program can be found in the web mail section, here (*need link when web mail is written).
4 You will now need to login to the web mail program using the username and password for the email account you wish to use.
NOTE: You can also access web mail through the web mail icon on the main screen of your cPanel interface.
Troubleshooting
Make sure to log out of web mail when you are done. If you do not log out, it may be possible for another user of the computer you are on to access and read your email.