Contact form 7 Multiple Auto responder problem

I am using contact form 7 clubbed with “email before download” to provide free downloads to my visitors. I want to send a auto responder to visitor once they download something from my site. The problem is i offer 7 or 8 different free downloads ( the contact form is same for all downloads) & i want the content of the auto responder to be different for different download. How to solve this issue? any free or paid solution?