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 can I block a user from responding to the form 2 times through the validation of their email?

    Asked by TRXBrasil on June 22, 2017 at 11:42 PM


    I do not want to allow the same user to respond to the form 2 times using the same email.

    Page URL:
    http://brainfit.com.br/quiz-retencao-de-talentos/

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    JotForm Support

    Answered by Kiran on June 23, 2017 at 12:52 AM

    It is possible by setting the email address field as the unique question field in the form settings. Please refer to the guide below that can help you to achieve this requirement.

    https://www.jotform.com/help/223-How-to-set-Form-Limits-Based-on-a-Unique-Question

    Hope this information helps!