Yes, it is possible to create mail accounts for parked/addon domains. For this purpose log in your cPanel and go to Email Accounts.
Under "Add a new email account" you can specify all details about your new email account along with the domain it should go with.
cPanel is easy to work with when you have the right host to support you. If you need a reliable partner to help you manage your website with cPanel, check out our cPanel hosting services!
