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When you ask if you can send emails to your contacts, can you give more details on this matter?
If what you want to do is to send emails after receiving submissions, you may do so. Just go to your submissions page and you will notice on the upper-left part of the page there is a Reply and Forward icon
Using these tools you can either reply to the person who made the submission or forward the submission to another email recipient.
But if what you wish to do is to automatically send emails to people who made submissions, what you need to create is an Autoresponder. This guide will walk you through on how to create this kind of alert: https://www.jotform.com/help/26-Creating-a-Form-Autoresponder
If any of these answers are not the ones you're looking for, please let us know.