Is there a way to opt a customer out of order confirmation emails? They're opted out of all of the marketing subscriptions. They still get the order confirmations. Is there another option somewhere that I'm missing?

You may wonder why anyone would want this. Their orders are entered through our webstore but then take special tweaks after we get them to make them complete. So, we make those tweaks and then we send the customer the accurate copy of their order. They don't want both versions coming to them because it adds confusion.