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.
The reason is that your email addresstanya@gem****zineli.com was IN the bounce list
Reason(s) : 5.1.0 - Unknown address error 550-'#5.1.0 Address rejected.'
This means that your email notifications settings were incorrect
In your case SENDER NAME was not assigned to a field from your form where the user enters her name (usually the"Name" field -or similar)
To prevent this issues, please check this guide for further details