The words "Email Client" is a term used to describe your computer's onboard email program such as Microsoft Outlook or similar software. What is described below assumes that you want to use your onboard email client to send and receive email using an email address based on your domain name. As a cpanel user it could not be easier.
Once you have logged into your webmail account as described in the previous post, you will be presented with the page as shown in the image below:
Click on the icon indicated by the red arrow. Next you must choose the appropriate link to auto-configure your email client. Choose one that does
not have (SSL) at the end of it and is for POP3 access. Be certain you have chosen the correct one for your email program.
From here you will see a few intuitive prompts . . . that's it.