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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    How do we prevent more than one submission from a given email address?

    Asked by evans_kiama on January 23, 2017 at 09:06 AM
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    Answered by KadeJM on January 23, 2017 at 11:09 AM

    To make a submission limited based on the email address given you need to set it up on your form as a unique question.

    Please see https://www.jotform.com/help/223-How-to-set-Form-Limits-Based-on-a-Unique-Question to get started and if you need more help just let us know.