when signing up for hushmail if you dont want to choose your own username/address thing then you can click choose for me and it gives you an auto address....which is the same as the ones you have posted above.....
so these two address could infact belong to completly different people....

But yea.....that e-mail doesn't seem like it was written by someone who has english as their first language....so it probly wasnt even from someone in america

but yea cheers for the heads up....i wouldnt trust either of those peopel.....or that person