What I want to do is this: somebody clicks a button and will then be taken to a new page with a contact form with an individual subject. So the link needs to provide the subject in a way such as 

To be more precise, clicking on :

```
button 1 = contact form with subject 1
button 2 = contact form with subject 2
button n = contact form with subject n

```

As this is running on Wordpress it would be great if that could be used with a popular plugin such as Contact Form 7. 

Has anybody done similar or is able to point me in the right direction?