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.
Your email Id "firstname.lastname@example.org" was IN the bounce list for reason:
Reason(s) : 5.1.0 - Unknown address error 550-'No Such User Here"'
I have removed the email Id from our bounce list hence you should be able to receive your notifications normally.
Please go through this article to avoid this from reoccurring: