self sign up: email notification to admin

Hi all,
I have setup self sign up on a number of mikrotik devices and all working well. I have a new request from a client who desires that whenever a new user signs-up on his network using the self-sign-up option, He (admin) also wants to get an email notification apart from the email that was sent to the user.

So that he can know that a new user just attempted to sign-up, especially for the free profiles.

is there a feature where this email notification can be enabled?

if Yes, How can I enable the e-mail notification to the admin?

if no, is there any other way around it?

thanks