Jeremy,
there is a Form Item Type "Send Copy", which displays a checkbox on the form saying something like "Send me a copy of this". When the user checks this, he will get a copy of the mail. To have this available, submissions by email must be enabled and a form item of the type "Email Address" must be on the form, to which the sender must be set in the module settings.
A summary of the submission on the redirect page is not possible.
Best wishes
Michael