Integrating a form or comment box in emails

[iamjust]

So, here is the thing. I want information from users so I have decided to embed a form in the emails.

The emails were gathered from the niche a while back but they are alive and live email addresses if that you want to know.

Now, my first choice is to put a comment box in the emails. I have tried it with some trial emails. But as it seems that everytime I do that I am unable to collect the data from the emails. Sometimes, the information get collapsed over each other and sometime its just unreadable.