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.
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JotForm Support Manager
Actually we do not have such option as of yet.
However, you might create your event form with a calendar included, then integrate it with a 3rd party mail service we got available so far. You have to have a list already. I think Constant Contact offer this service, but not fully sure.
Other solution would be to create the form with them and set it up, rather than using a JotForm and an integration with the service.