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.
You can create new custom fields on a list type in SalesForce:
However, the list you should choose can only be one of Account, Contact or Lead. You are not able to create custom lists on SalesForce and pass that to JotForm. I hope this is clarifying.
Please contact us again if you need any further assistance.
I have a custom object I need to write to. Why not make that an option?
I'm afraid our standard Salesforce Integration is limited to Lead, Contact and Account objects.
It's worth mentioning that this is probably doable with Zapier acting as the middle man (JotForm > Zapier > Salesforce).
Related guide: https://zapier.com/zapbook/jotform/salesforce/