[Plugin: Contact Form 7] Passing in Variables

Hi Im’ wondering if anyone knows if it’s possible to pass a variable into contact form 7.

to give an example.

I’m on a page on my website, and I’d like to send some text from this page to automatically prefill the subject in my contact form so the user doesn’t have to remember what page they came from.

is this possible? and if so how should I go about it?

if it’s not possible with contact form 7 does anyone know of another plugin that gives this functionality?

thanks

Dave