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.
There are several reasons why your email address is bouncing but usually, the reason is email service provider.
An email address usually gets added to the bounce list if the recipient's inbox is full, the mail server was unavailable at the time that the email was being sent, or if the email server is rejecting the email due to suspected spam.
If your e-mail address is in bounce list, you should remove it from it in order to receive notifications. You can follow this user guide to remove your e-mail address from the bounce list.
To prevent further bouncing related issues, please see our guide here: How to Prevent Email Bouncing Related Issues
Especially, it's recommended to setup SMTP o prevent the bounce issues: How to Setup SMTP for a Form
Also, please add these IP addresses to your whitelist:
ip4:126.96.36.199/18 ip4:188.8.131.52/16 ip4:184.108.40.206/16 ip4:220.127.116.11/18 ip4:18.104.22.168/20
If you need further assistance, please let us know.