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.
The best way to do this is to setup two different forms. One as the form to grab their details then send them an email with a link to edit the the second form. This link will allow them to revisit the form later and update their submission. Here is a more in depth guide on how to accomplish this:
If you have any questions about this or anything else for that matter, let us know and we will be happy to help.