JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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.
Yes, this is possible to limit submissions based on IP address (one submission per IP) or browser cookies. Please see the next guide.
Alternatively, you might consider limit submissions based on a form field (e.g. based on email field).
Please feel free to contact us if you need any further assistance. We will be happy to help.