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.
This could be related to bouncing, we need to get the email address where the emails should go, you may also check if your email address is in our bounce list and remove it if it is, follow this guide to do it: http://www.jotform.com/help/262-How-to-remove-your-email-address-from-bounce-list.
Also, follow this guide to prevent issues related to bouncing: http://www.jotform.com/help/208-How-to-setup-email-alerts-to-prevent-email-bouncing-related-issues.
If the issue is still there after following these steps, and you are using our default sender email addresses (email@example.com or firstname.lastname@example.org), ask your email provider to whitelist our IP Addresses: http://www.jotform.com/help/145-Whitelisting-JotMails-IP-Addresses.
Hope this helps.