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.
Can I restrict access to a form based on an entered email address?Asked by JothomasYY on October 29, 2016 at 11:42 PM
I would like to validate the email address entered by a customer against a list of all customer email addresses to determine whether they are allowed to use the order form or not? Almost like a login but without a password.
It is possible to restrict a user based on a unique question field like email address. This will prevent multiple submission from the same user. Please refer to this user guide: https://www.jotform.com/help/223-How-to-set-Form-Limits-Based-on-a-Unique-Question
If you have any questions, let us know. Thank you.