I need to use "
mail.domain.tld" instead of "
webmail.domain.tld". How can I change it?
It is not possible to change webmail URL in Plesk 11.5 for Windows. But you can create the subdomain "
mail.domain.tld" with a permanent forwarding to "
webmail.domain.tld" and all your customers will be forwarded to proper webmail page.
See more info about forwarding in the online documentation