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.
Yes, it's possible.
You'll need to provide each user a link to their submission in order to allow them to continue. You can do this by using a thank you page or an autoresponder
Please take a look at this guide: http://www.jotform.com/help/97-How-to-Save-Forms-to-Continue-Later
Also you can try this out on this demo form: http://form.jotform.co/form/32927314628862
Please let us know if this works for you.