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.
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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.
Is there ever a bottle-neck where if to much traffic or volume that will cause the email notification to fail?Asked by AZDBAdesze on March 16, 2017 at 04:04 AM
Traffic won't be an issue as mentioned on your first thread. The only thing you need to worry about is the Form Views limit per plan. And on the Free Plan, you're limited to 1000 Form Views per month.
You specifically mentioned "other then a user putting in an incorrect email address or the format is not correct" so I'm assuming you're talking about Autoresponders. If you have a form that is not sending out Autoresponders, give us the Form ID/URL so we can have a closer look.