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.
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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've checked your receipt mail address and see that it is not at the bounce list.
However when I checked in mail logs of firstname.lastname@example.org and saw that there is a failure.
It seems the system is blocking the sender email.
It is probably because of the sender and receiver emails are the same.
I advise you, try another sender email address or use email@example.com