I wanna create a subdomain for all email login without port number and use subdomain. Anyone can help me?
Welcome @itcacvietnam Happy you are here
That is impossible.
You cannot allow all your users to use different links to webmail e.g. customer1.com to access at webmail.customer1.com and customer2.com to access at webmail.customer2.com
CyberPanel uses snappymail as the webmail software of choice. This is only accessible via ip adress/snappymail or primarydomain/snappymail.
What you can do according to your topic title: