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.
Emails addresses get added to the bounce list due to some reasons either the inbox is full, the email server is rejecting the email due to suspected spam or the mail server was unavailable during the time that the email was being sent. If your email address was added on the bounce list, you should remove it so that you can receive future emails. Here's the guide on How to Remove Your Email Address from Bounce List.
To prevent this from happening again, please see this guide: How to Prevent Email Bouncing Related Issues.
We highly recommend the users to set up an SMTP sender on their form to avoid this email bouncing issues. Here's the guide on How to Setup SMTP for a Form.
Let us know if you need further assistance.