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.
Hello. Is there a way to make it so that your form will only accept a submission from an email address one time - to make it so that one person cannot submit multiple submissions.
You can enable on your form the unique question setting. By assigning it to the email address on your form, it will only allow the person to make a submission based on the email address he is submitting, and he cannot make another submission on the said form more than once.
Here is a sample guide on how to enable this on your form: https://www.jotform.com/help/223-How-to-set-Form-Limits-Based-on-a-Unique-Question
If you have questions or if you need clarification or assistance on this matter, please let us know.