Can someone confirm where PC code is

I pre-ordered the PC version loot chest edition from GAME. I’ve recieved the my loot chest but no game code to download BL3.
Could some please confirm Is the code inside an empty case ? or is it emailed from GAME ?.
I’ve contacted them and they’ve told me to wait for the exclusive mask to arrive and see if my code is in there. But I was just wondering how the code is given to you.