mail telling what url a contact form was from

When someone fills out a form and I get an email with the info, is there a way that the email I get can tell me the web page the form was on?

I can duplicate the form for each web page I want it on, and notate in the subject line the page it came from. But then if I want to change the form, I have to change it on every page. It’d be easier if there is a way the form can grab the url of the page it was on and include it in the email to me. Wondering if this is possible and, if so, how? Thanks.

https://wordpress.org/plugins/contact-form-7/