Fill out signup-form with email data

Hi,

before I send my new members to http://bizinthe.cloud/wp-signup.php to register, I let the optin through infusionsoft to have a double optin and a working email adress.
After this I send them to http://bizinthe.cloud/wp-signup.php to fill out the form and register their website/subdomain.

I send them trough an infusionsoft-link like this, with the email adress as an attribute:
http://bizinthe.cloud/wp-signup.php?Id=237047&Email=support@heikohaeusler.com&inf_contact_key=ab42e1c3d3b12c257df6b64d37284aa59fc8dac1c7ed02b3d673bd021b640dc4

My question: Is there a way to enter this email adress on the signup-form in the moment the user sees it and possible grey it out so he can't change it?

regards

Heiko