To find the needed Server settings for your Email-Client (Like Outlook/Thunderbrid/Apple Mail) please find the needed settings in the cPanel under "E-Mail-Accounts" -> "Connect Devices" next to the email address.
The incoming/outgoing server usually is
mail.yourdomain.com
Connection ports are the default ports:
With SSL/TLS:
IMAP Port: 993
POP3 Port: 995
SMTP Port: 465
Unencrypted (not recommended):
IMAP Port: 143
POP3 Port: 110
SMTP Port: 587