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.
In your submissions page, there is a reply button that allows you to respond to the submission you received (given that is has an email field):
Here you can compose your reply:
If you want to send an email update to your list of submissions, you can try the following applications and integrations:
You can also find other email related apps on this page: https://apps.jotform.com/search/email
I hope that helps.