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 I can block spam e-mails?

    Asked by lakistoussas on July 25, 2016 at 07:51 AM

    Dear all,

    some people uses my forms to send spams. How can I block those e-mail addresses?

    Please help me.

    Thank you very much

    Lakis Toussas

    Page URL:

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    JotForm Support

    Answered by Welvin on July 25, 2016 at 09:35 AM

    You can set a limit in the form, you can use any of the following:



    The unique question limit is recommended for your case.

    I would also suggest adding a captcha in the form: