Hi!
And you know for a fact that they did not subscribe to the newsletter? I am a US Back customer and I have never received their newsletter (and they certainly have my e-mail address since I do online banking with them) until just now, when I subscribed to it for testing purposes.
I am not a customer, heck, i dont even know that US bank at all, but i have at least 10 fresh ones in my spamtrap, on never used domains/address combinations. They are a known fishing target.
Try google on usbank and spam...
Bye, Raymond.