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 have checked and email address of your Notification is in the bounce list. Our system gave following result:
firstname.lastname@example.org is IN the bounce list
Reason(s) : smtp; 550-5.7.1 Unauthenticated email from yahoo.com is NOT
I have removed it from the bounce list.
You can follow this guide on How to setup email alerts to prevent email bouncing related issues.
Also you should contact your email provider and ask them to Whitelist JotMails IP Addresses.
Please test your form and check if you are receiving submissions now.
Let us know if you need further assistance.