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.
You can do that by creating an Autoresponder Email. Here's a guide:
1. In the Form Builder, click the Emails button.
2. In the Emails wizard, click the Create New Email button.
3. Select Autoresponder Email to send an email the person who fills your form.
4. Make sure you have an email field on your form.
Hope that helps. Thank you.