I'm not seeing a code in that e-mail or the other 2, they all read "We have made a direct deposit into your MTGox account and there is no need to use the coupon system on this order" before listing the data.
look where its says "APIResponse:" in the email it should look something like APIResponse:MTGOX-USD-XXXXX-XXXXX-XXXXX-XXXXX that is your coupon code.
I got the same email
We have made a direct deposit into your MTGox account and there is no need to use the coupon system on this order
OrderID: 65bea56c-6185-4889-ac36-b5ad8f9edfe1
EventID: 147cb8a9-eee9-4518-bbd5-b9f18926adb8
DestAccount: 205634
QuoteID: cfd1b539-d7a4-422e-869f-99400b586e2d
User: SYSTEM
DestExchange: mtgox
eventtype: Order executed
EventSentAt: 1364336352.82
APIResponse: MTGOX-USD-XXXXX-XXXXX-XXXXX-7EC8D
FundsSent: $480.05 USD
it says the funds were deposited into our accounts but instead we were given a coupon code.... I'm curious to see if your coupon code works cause mine sure didn't