on the confirm page, there are 2 problems i can see:
1) The order of operations is:
Store Order Summary
Store Order Details
but in the store order details behavior, you have it set to redirect to the success page, this redirect will happen before the the email can be sent
edit the store order details behavior, and make sure it does not redirect.
2) in the universal EMail behavior, you have the To address set to use the eCartCheckoutForm_postcode binding, this is not a valid email address. you should use the eCartCheckoutForm_email binding instead.