Warning USPS E-Mail Scam/Trogen

Just noticed a e-mail from USPS saying your
"package" is being returned. And that you
need to kick it up.
No other information or # number.

There is an attached ZIP file that if you open it
you download a keystroke recorder.

I am not sure if ZoneAlarm will keep a keystroker
from accessing the internet to send out your
passwords and information.