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.
Unfortunately that is not possible. However you can check email history log on your account to see if some Notifications failed to be sent.
If the email address is in the bounce list you can remove it.
Also this guide can help you to prevent bouncing:
Hope this will help. Let us know if you need further assistance.