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 checked the notification for your form with the most submissions and it appears your notification has been setup correctly. When I checked our mail logs however, I was unable to find anything sent to your Yahoo email address. We have had issues in the past with Yahoo blocking or filtering email from our servers for some users. If possible, try using a different email address as the only one in your notification and see if the notification is sent on completion of the submission.
If using the Yahoo email address is a requirement, you can also try using Mandril to send the emails: