standby83

Hello, i was wondering is there any way to make this work. I have a working Directadmin server with normal hosting accounts and i wanted to start new hosting for email only on taht server. How i want this to work is: - i've setup user with 3 domains to use for email creation - whmcs DA module that upon registration will choose that da_user, give a choice of preferred domain that new user would like to have an email with, and create that email ( with selected quota). Everything like a normal DA module but for email only. Is that possible? Maybe there is another way to achieve this or something similiar?