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Dead letter mail or undeliverable mail is mail that cannot be delivered to the addressee or returned to the sender. This is usually due to lack of compliance with postal regulations, an incomplete address and return address , or the inability to forward the mail when both correspondents move before the letter can be delivered.
In most cases, this means that the address is deliverable. However, if the USPS has the address listed as "VACANT", it is not delivered, even though the address is valid. Note: An address can still be valid (but not deliverable by the USPS) if it is a remote location and only served by private carrier such as UPS or Fedex. [citation needed]
The USPS distinguishes a Nixie from other address errors in that the mail piece is always returned to the sender, whereas a change of address could either be forwarded or returned to the sender with a correction or notification. In the early 21st century the word began to be printed in the upper left corner of yellow labels generated by the ...
Advice marks notify about forwarding, missending, letters received in bad condition, letters received too late for delivery by a certain time, or the reason for a delay in mail delivery. (For example, a letter may be marked "snowbank" if snow accumulation not cleared by the potential recipient, or for whatever other reason, makes it difficult ...
A possible Intelligent Mail Barcode for the Wikimedia Foundation address. The Intelligent Mail Barcode (IMb) is a 65-bar barcode for use on mail in the United States. [1] The term "Intelligent Mail" refers to services offered by the United States Postal Service for domestic mail delivery.
A UPS tracking number, for domestic packages within the United States, will usually start with "1Z" followed by a 6 character shipper number (numbers and letters), a 2 digit service level indicator, and finally 8 digits identifying the package (the last digit being a check digit), for a total of 18 characters.
International Business Reply Service: QN–QZ: Unassigned [a] RA–RZ: Letter post registered. The use of RZ requires bilateral agreement. SA–SZ: Reserved [d] TA–TZ: Reserved [d] UA–UZ: Letter post items (when L, M, Q, R and V codes don't apply) [e] The use of UZ requires bilateral agreement; VA–VZ: Letter post insured The use of VZ ...
While not a form of registered mail, certified mail allows the sender proof of mailing via a mailing receipt and, upon request, electronic verification that an article was delivered or that a delivery attempt was made. [17] Some in-transit tracking and delivery confirmation information may be provided, but there is no formal chain of custody.