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JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.

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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 prevent multiple submission from the same email address?

    Asked by jeremylwf on October 27, 2013 at 07:18 PM


    Would it be possible to prevent multiple submission by preventing the same email address from being used twice?

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    JotForm Support

    Answered by ashwin_d on October 27, 2013 at 09:45 PM

    Hello jeremylwf,

    Yes that is possible to achieve.

    You can take advantage of our "Unique Question" feature and you can limit your form. One you set your form's email field as a unique question, multiple submission using the same email address will not be allowed.

    Here is a guide which should help you:  http://www.jotform.com/help/223-How-to-set-Form-Limits-Based-on-a-Unique-Question

    Hope this helps.

    Do get back to us if you have any questions.

    Thank you!