Add [EMAILDOMAIN] placeholder in webmail URL's
Add [EMAILDOMAIN] placeholder in webmail URL's similar to the [SERVERNAME].
Usage: If an email is someone@example.org and another email is someoneelse@anotherdomain.org to be able to redirect (create links) from ispconfig to https://example.org/webmail and https://anotherdomain.org/webmail based on email domain.