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I am not sure if I have understood your question correctly.
Do you want to send submission emails to the email address which is input in your form field?
Yes it is possible to achieve your requirement. You can add an autoresponder in your form and set the "Recipient Email" as your form field. The following guide should help you: http://www.jotform.com/help/26-Creating-a-Form-Autoresponder
Hope this helps.
Do get back to us if you meant to ask something else.