When using the form is it possible to pre-fill in form fields from a URL query string?
I've tried using the following code:
http://www.example.com/contact?field_6676857232379871233=subject
Where "field_6676857232379871233" is the id of the field which is to be pre-filled.
This can be done using JS. You can add your own JS, that pre-fills the form.