Email accounts for addon domains are created exactly the same way you create email accounts for your primary domain. When creating the email account in the cPanel you will see a drop-down menu which allows you to choose the desired domain name. 

To create an email account for an addon domain; 

  • Login to your control panel >> Click on Email Accounts.
  • Fill in the name you want >> Select the domain name from the drop-down.
  • Type the desired password twice.
  • Change the quota if you want.
  • Click Create.

*NOTE: By default, you have no email address set up for the addon.