In my case the code was displayed on the screen when I bought the game, so I did a copy/paste before the code arrived by email.
I just looked at my own email history.... and it should be noted that the confirmation email arrived about 40 minutes after the purchase, but since I had the code already as it was displayed on the screen, I activated the product already.
Since it took 40 minutes for me, it may take some time before you get the email.
Moved from Riddermark to Arkenstone on 9/29/2015! Now also playing on ANOR!
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Disclaimer: The definition of "Soon™" is based solely on SSG's interpretation of the word, and all similarities with dictionary definitions of the word "Soon™" are purely coincidental and should not be interpreted as a time frame that will come to pass within a reasonable amount of time.