Federal law makes solicitations that imitate government mail carry a disclaimer. Where to find it on the envelope, and the named patterns to recognize.
Letters Designed to Look Like Government Mail Read Post »
USPS does not require a return address on ordinary mail. Which senders routinely omit it, when the absence matters, and what happens if you refuse it.
Mail With No Return Address: What It Means Read Post »
A 1978 Supreme Court ruling and a 1980 state law put card operations in South Dakota. Why so much of your bank mail arrives from Sioux Falls.
Sioux Falls SD PO Boxes: Why So Much Card Mail Read Post »
Some boxes never resolve, and that is a real outcome rather than a failed search. How to decide what to do about mail from a sender you cannot confirm.
When a PO Box Cannot Be Identified: What to Do Read Post »
Renting a PO Box requires two forms of ID at a US post office. Why volume mailers use boxes, and why the box itself is weak evidence either way.
Why Companies Use PO Boxes Instead of an Address Read Post »
PRSRT STD, permit numbers and indicia are printed sender intelligence. What the markings near the stamp reveal about who mailed you and from where.
Presort Marks and Permit Numbers on an Envelope Read Post »
Why a company lists a street address and mails from a PO Box, how USPS street addressing works, and how to check whether both point to one box.
PO Box Street Addressing: Two Addresses, One Box Read Post »
What paid reverse-lookup services actually return for a PO Box, why the data often fails, and the free official records that answer it better.
Reverse Address Lookup for a PO Box: What You Get Read Post »
The exact search queries that identify a business PO Box, why the box number alone returns junk, and how to tell a confirmation from a guess.
How to Find Out What Company a PO Box Belongs To Read Post »
