From which page comes has been filled in the form?

I don’t think that’s an option within this plugin. I’d suggest copying the form so that you have two forms – one for each page. then, in the email message template, you can add something indicating which page each particular form is on.

I guess this is what you are looking for.

https://contactform7.com/special-mail-tags/

Try [_url] or [_post_url] in the mail message body.