Use email in the registration form

[hellogbg]

I would like to use email of invited user to pre-fill the registration form, because I want to minimise the risk of them entering another main than the one they have been invited via.
I can see the variable account_verified_email in the response that is coming when clicking on link but I am not sure if I can use it in a form presented at the SIGNUP_REDIRECT link.
Is there a way to use that email in the custom create user form? How would I pass the email on to the form?