How To Use Your Domain To Send and Receive Email Using Gmail
Just follow the steps below
Login into your gmail account and go to settings.
Login into your cPanel and create your email account (example firstname.lastname@example.org). Make sure you have an active domain and the email username and password you have created is correct. (Note: if you don’t know how to login into your cPanel Click here )
Click on > Accounts and Import and >Add another email address you own