Originally Posted by
Savannah
USPS is delivering the package: "Most packages mailed to United States addresses will be sent via USPS Priority Mail (2-3 day service), while packages leaving the country will get USPS Priority Mail International(listed as 6-10 days, but leave time for your country's customs process)."
The Express Mail is a fair point (I didn't go back and look at the text), however, I still find it strange that he's getting an email from usps.com given that that is the actual USPS website. It can't possibly hurt to contact USPS and make sure.