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 allow an email to sign up once per form

    Asked by Lisa  on April 29, 2015 at 12:22 PM

    We are interested in implimenting a smart form that 

    1. Only allowes an email to sign up once per campaign. 

    2. Can generate a unique code for each submission. 


    Can you offer both of these in your Economy Package?

    Thank you,


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    JotForm Support

    Answered by Mike on April 29, 2015 at 02:39 PM

    Thank you for contacting us.

    Yes, we can configure the form to accept unique email addresses only. You will need to set a limit based on a form email field, please see the next guide:

    How to set Form Limits Based on a Unique Question

    The second question has been moved into a separate thread. 


    We will get back to you quickly.