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.
No, I checked the notification for one of your forms: http://www.jotformpro.com/form/51520825159959, and the recipient email was in bounce list: https://www.jotform.com/help/262-How-to-Remove-Your-Email-Address-from-Bounce-List
That's why you are not receiving notifications, you may white-list our domain names, if the issue continues, as we use Amazon SES method for "firstname.lastname@example.org" sender:
Please open a new thread if you need anything else, we will be glad to assist you.