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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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    Limit submissions

    Asked by dsignmalin on June 23, 2015 at 04:32 AM


    How can we limit submissions so that phone number and email address must be unique?


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    JotForm Designer

    Answered by baki on June 23, 2015 at 04:40 AM

    Hi there Malin,

    You can use our "Unique Question" feature. Once 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

    If you need further assistance please feel free to ask. Have a nice day.