How to create a registration form for new users of a domain connected to mail ru mail for business?

Question

API

We have a domain connected in mail ru mail for business, they have a domain login form, but there is no new user registration form on this domain. You can, of course, through the administrator, but it would be more convenient for users to register their mailbox through this form.
Give an example of such a form, I beg you. I'm in the API, I do not understand at all.

Answer 1

ask the admin