To add an email account, do the following:
1) Log into Cpanel.
2) Click on the "mail" icon.
3) Click on "Manage/Add/Remove Accounts".
4) Click on "Add Account" at the bottom.
5) Type in the desired username and password.
6) Click the "Create" button.
Please note that all added email addresses usernames will be in the format of email@example.com (in other words the email address will be the username).