I got one of these today. It was sent to my BTC-E email address. (I have my own domain, so I sign up with every service under a different email address.)
I wonder how they got hold of that?
--Tom
Never registered at coinbase.
The only btc related stuff I registered to with that email address is Bitcointalk, Localbitcoins and Kraken (and havent used these in more than a year).
So it is probably one of these that had their memberslist leaked/hacked.
(Or.. one of these fuckers sold their data)
I havent used this mail for any of those, including BTCJam.
I used it for Gox though.
It must be multiple sources.