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.
Not sure if I fully understand your concern.
For the concern about building a mailing list, you can check our available apps here: http://apps.jotform.com/category/emailling. I believe you can easily transfer submissions and build contacts there, you can also have a email campaign based from those captured submission data.
I hope that helps. Do let us know if I misunderstood your concern.