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.
Did you change the recipient of the notifier/notification and it is now not similar to the email address of your Jotform account? If so, then "Test mail" would not work. Please be advised that "Test mail" would send an email to the email address on your Jotform account. If it is a different recipient already, I would suggest you just try to make a test submission (Fill up your form and then make a submission).
Please refer to this guide: How-to-properly-Change-and-Test-a-New-Email-Recipient-Address-