Normally, when a registrant receives email confirmation after submitting a Form, the email address it is received from is non-replyable.
With Sporty forms, you can add a reply email address to confirmation emails.
Go to the edit page of a Form by clicking Online Registrations from the Dashboard, and then clicking the pencil icon of that Form (see How to edit a form).
Click the orange button Advanced Options.
The first text box under Advanced Options is labelled From Email. Enter the email address you would like your registrants to be able to reply to.
Save the Form by clicking Save Form.