Here is a thing.
I have a offer page with 3 services listed (service a, service b and service c).Each service links to the page where the contact form is (/contact page).
Now, i would want to link each service, so when user clicks on service b, Subject field ([text subject]) is filled with text "service b".
English isnt my first language so i apologizeif i didnt explained it properly.
Anybody can help, it is highly appreciated!