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.
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You users will be able to submit your payment form, if payment field is not required and if non of products are selected. So if total amount inside of payment field is zero your users will be redirected to thank you page and you will receive email Notification.
Inside of this articles you can find out more about payment tools and how to set payment form:
Hope this will help. Let us know if you need further assistance.