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.
JotForm Support Manager
This is because Comcast is rejecting emails coming from our servers. Therefore the messages are bounced back and that is how your email address ends up in our bounce email@example.com is IN the bounce list
Reason(s) : smtp; 554 resimta-po-08v.sys.comcast.net
I would suggest you to disable the spam filter of your comcast email account and see if that resolves this issue. The following guide should help you on how to disable the spam filter: https://studiohelper.uservoice.com/knowledgebase/articles/390804-clients-reporting-not-getting-their-emails-comcas
If the issue persists, I would recommend you to use some other email address in the "Recipient Email" address of your form's notification email alert.