I know that there's a warning that "most emails won't be recognized", but how is it supposed to work? I ask because I forwarded an email containing tracking info, and got the "not recognized" reply - so I sent a new email, this time with only two things, "USPS", & the 22-digit USPS number, like so:
USPS 9410nnnnnnnnnnnnnnnnnn
It doesn't get much simpler than that - but still it wasn't recognized. Is there a better way to format it?
Thanks!
