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I am not sure if I have understood your question correctly.
Do yo mean to say that you want to automatically send submission email to the user who submitted your form?
You will have to add a "Form Autoresponder" email alert in your form and that should solve your problem. The follwoing guide should help you: https://www.jotform.com/help/26-Creating-a-Form-Autoresponder
Hope this helps.
Do get back to us if you meant to ask something else.