I've been researching this for the past hour and so far all I can come up with is that mail that is being sent to certain government offices is being irradiated. This was implemented during the 2001 anthrax attacks. The only issue I have with this answer is that most articles and materials only date back to 2002. I have not been able to find any information that is more recent.
For more info:
It stands for united states postal service (usps).
It stands for united states postal service (usps).
Visit usps.com to find a local post office near you. Bring the package you wish to mail and they can answer all your questions there about prices and shipping times.
USPS first class mail international 2-3 Weeks
Depends on which service you use. USPS Express mail: Overnight USPS Priority mail: 2 -3 business days USPS First Class Mail: 2-5 business days
What is standard mail as opposed to first class mail as defined by the USPS?
USPS stands for United States Postal Service. USPS First Class Mail is a mail service used to send things in envelopes and packages that weigh up to 13 ounces. The delivery time frame for USPS First Class Mail normally ranges from 2 to 3 business days.
Yes it is.
no
Yes!
No. When counting days for Priority Mail, USPS only includes business days.
how long dose it take standerd usps mail to be delivered from us to kuwait