can yu add a form to the signature area in a email?

Want to have a form in my emails for people to add testimaonials.

It is not possible to add the form itself, however, it is possible to add a link to your form.  Here is how to find your forms URL:

https://www.jotform.com/answers/668928-Where-can-I-find-the-form-URL-of-my-form