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That's possible by following this guide: http://www.jotform.com/help/39-Send-Notifications-to-Multiple-Recipients.
You can also use the field names and separate them using comma and space if you are placing it in the recipient address field or in the conditional logic.
Here's an example:
1. Here I have 2 email fields.
2. Now I want to send the notification to those email addresses that were filled out in the email fields using conditional logic. I'll just get their field names and separate them with comma and space.
I hope that gives you an idea on how to proceed.