Webformular- passing zoom and email address (signer) to form

Dear community, 

I have created a webformular and embedded it to mobile web page. Basically everthing works fine and prefilling via the URL of the formular is working. 

Two issues are open: 

-1) Is it possible to pass the signers email adress also to the formular. So after signing the email address for sending copy is already prefilled.

-2) Is it possible to change the zoom level of the document via a URL parameter? I open the link via a mobile web application and the zoom level is alwas to high.

Thank you very much for your help.

best rgeards

Florian