I thought I got all my ADRs (from single "checkout") in one email. I think you can have up to 10 ADRs in your cart (someone correct me if I'm wrong!).
You can always call Disney Dining and give them the name & phone number you used and they can tell you what the confirm #s are ... then you can "retrieve" them on the WDW website and email them to yourself (or your friend) again.