They let some coupons stack and others they don't. I always type a bunch in and see what they take. I can't actually figure it out.
What she said. Also, if you are talking about the free shipping on cards codes they recently sent out, I think they can only be used on the cards but not the calendar, but I am not 100% sure.
I have used free photo book, free shipping, free mousepad, 50% off photobook, and 50 free prints all on the same order. You just load in all your codes and you can pick one from each of their categories. That particular order was worth $90+ and I paid like $10.50.
Re: Shutterfly Q