Follow these steps to create an email account in cPanel.
Log in to your cPanel.
Under the "Email" section click on "Email Accounts".
Then click on "Add Email Account"
If you have multiple domains, select the domain you want your email account to be associated with in the drop-down list in the top right corner
Enter the desired email and a strong password of your choice,
If all looks good click on "Create Account"
To log in Webmail
Click on More next to the email account in question - Access Webmail
You will be asked to select a Default Webmail Application
NOTE: You can also access webmail directly in the browser with yourdomain.com:2096 with the full username (email@example.com) and password for the email account.