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 to not allow duplicate entries

    Asked by lizziesider on October 02, 2015 at 02:12 PM

    Is there a setting that will not allow duplicates to sign up on my form?

    Page URL:
    https://secure.jotform.us/form/52637361539158

    unique submission duplicate submission
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    JotForm Support

    Answered by Mike on October 02, 2015 at 03:31 PM

    Yes, this is possible to limit submissions based on IP address (one submission per IP) or browser cookies. Please see the next guide.

    How to Set Unique Submissions on a Form

    Alternatively, you might consider limit submissions based on a form field (e.g. based on email field).

    How to set Form Limits Based on a Unique Question

    Please feel free to contact us if you need any further assistance. We will be happy to help.