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.
When a user submits a form the data is redirected to our database and it can be accessible by following this guide: How-to-View-Form-Submissions
If you want to get the data too and process it with your own code or in your own server then you could get the info through the POST method, this guide will help you: Send-Submission-Data-via-POST-Method-Using-PHP-and-the-Thank-You-Settings
You could also use Webhooks to get the data on the back-end, with this you will be able to process the data on your end and still redirect to your thank you page.
Hope this helps.