what is bounce list

Whenever messages are rejected by your email service provider's servers (due to security setting or filters), we will try several times to deliver the message for a given time-frame, but if the delivery fails, it will mark it as "rejected", and it will store your recipient email address into our bounce list.

Please check this guide to see if your email recipient is in our bounce list: http://www.jotform.com/help/262-How-to-remove-your-email-address-from-bounce-list

If you are having any issues not receiving email notifications, please let us know, we will be glad to assist you.