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.
To add a unique ID to your subject line, you will need to add a Unique ID widget to your form. This widget will automatically generate an ID for each submission. Once you added the unique id widget to the form, simply get the field's name and add it in the subject line of your notification.
Here's how it should look in the email notification:
If you need further assistance, please let us know.