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How to create new Email Addresses & Mailboxes in cPanel
Please see the documentation provided at the link below
https://documentation.cpanel.net/display/ALD/Email+Accounts
How to setup your POP3 or IMAP Email Client
For email accounts that you setup, you should use the following connection details in your email program:
POP3 Host Address: mail.yourdomain.com (replace yourdomain.com with your actual domain name)
SMTP Host Address: mail.yourdomain.com (replace yourdomain.com with your actual domain name)
Username: The email address you are checking email for
Password: As specified in your control panel