Upgrading supporter pack and additional EA key question

I originally got the Lord of Ogham pack when I paid for Early access. Last weekend I upgraded to the vaal tier pack, and in there it says I'll get an additional EA key. Is this going to be emailed to me? Or is it already distributed somewhere I'm just not looking?

I'm playing on steam BTW, I just made this account now to ask on the forums, so this account is not connected to my steam account.