Form Email Field: Enforce Unique Email with Warning Before Stripe Checkout

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    Global_Conversations
    Asked on March 25, 2026 at 3:55 PM

    Hi!

    We're looking for a solution where forms email filed is able to be unique, and if not get a warning or such before being passed on to stripe checkout to complete payment.

    The use case is that the email is the key in our set-up and though Jotform can handle duplicate records with email or other system rejects duplicates and therefore we're looking for a solution.

    Thanks!

    David

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    Kris Ann JotForm Support
    Replied on March 25, 2026 at 4:03 PM

    Hi David,

    Thanks for reaching out to Jotform Support. You can prevent the same person from filling out your form multiple times based on a Unique Field in just a few simple steps. Let me show you how:

    1. In Form Builder, in the orange navigation bar at the top of the page, click on Settings.
    2. Next, click on Show More Options.
    3. Now, scroll down to the Unique Field section and select the field you want to use.

    
Form Email Field: Enforce Unique Email with Warning Before Stripe Checkout
Image-1 Check out the screencast below to see how it'll work:

    
Form Email Field: Enforce Unique Email with Warning Before Stripe Checkout
Image-2 You can use the Unique Field feature with the Email, Short Text Entry, Dropdown, and Number field elements.

    Reach out again if there’s anything else we can help you with.

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    Global_Conversations
    Replied on March 25, 2026 at 4:03 PM

    I jumped the gun posting in the forum and found the answer :)
    https://www.jotform.com/help/64-how-to-set-unique-submissions-on-a-form/

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    Global_Conversations
    Replied on March 25, 2026 at 4:05 PM

    Thank you Kris!

    Is there anyway to modify the text on the warning page?