Here are the required Email Settings for Webmail.
Secure SSL/TLS Settings (Recommended)
Username: Your Email Address
Password: Use the email account’s password.
Incoming Server: mail.YOUR_WEBSITE_NAME
IMAP Port: 993 POP3 Port: 995
Outgoing Server: mail.YOUR_WEBSITE_NAME
SMTP Port: 465
Connection Security:- SSL/TLS
Authentication Mode:- Normal Password
IMAP, POP3, and SMTP require authentication.
Use Imap option if you would like to sync email on different devices.(May Increase Email Quota).