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 have checked your email address and did not find it in our bounce list at the moment; however, upon checking the email history I can see there're blocked/bounced emails, may be that you're already removed it from our bounce list.
You could also check your email history by following this guide: https://www.jotform.com/help/293-How-to-View-All-Your-Form-Email-History
What I would suggest you is to check this guide that will help you to avoid bouncing issues: How-to-Prevent-Email-Bouncing-Related-Issues
You could also ask your email provider to whitelist our IP addresses so you avoid this problem: https://www.jotform.com/help/145-Whitelisting-JotMails-IP-Addresses
Hope this helps.