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.
Thanks for contacting us.
In simple words a sub-account is another Jotform account that you connect with yours to share access to your forms and to your form's submissions. However to have a deeper knowledge about what a Sub-account is and how it works, please refer this guide: How to Share Forms with a Sub-Account User
The limit number of sub-accounts you can have depends on the plan you got. You can see the details about the limit of Sub-user accounts per each plan at our PRICING page.
Please let us know if you need further assistance.