What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
I can see you do not have the email field in your forms so far, if you're sending the email to each individual email address then you may add a hidden email field and pre-populate the field with the email address you're sending the form.
This is a sample link that you may use: http://firstname.lastname@example.org
And change the email address pre-populated in the link as you send it to each email address.
Another way would be to ask for the email address or other info in the form and set it as required, otherwise in the Form Analytics tool you will be able to get only the IP address where the form was submitted from as well as the device used.
Please if you have any question, let us know.