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 am really sorry that you have to deal with this issue constantly. I think the best thing to do here is that you setup SMTP for your form. This should take care of the bouncing issue. Here is our guide about how to setup SMTP:
You are probably aware of another guide of ours since you have to deal with bouncing that often, but still I want to suggest you to read it here:
We strongly recommend users to setup SMTP to deal with bouncing tough.
If you need any further assistance please contact us.