Hilltop Label

How To Read A Nixie Label - TrueNCOA If you receive a yellow NIXIE label with USPS returned mail codes, you can determine why the piece of mail was returned. Some of the most common nixie mail codes: Attempted Not Known (ANK): Delivery attempted, addressee not known at place of address 4x1-1/4 Yellow RTS Return to Sender Special Handling Instructions ... Amazon.com : 4x1-1/4 Yellow RTS Return to Sender Special Handling Instructions Mailing Shipping Stickers 500 Labels per roll : Office Products. USPS Returned Mail Codes: Most Common Mail Return Codes - PostGrid Did you ever receive mail returns with giant, yellow stickers on them? These stickers or labels carry the USPS returned mail codes, and deciphering what they mean can be confusing. A recent USPS audit found 40,000 undelivered mail items across two post offices in Columbus, Ohio. Yellow return to sender sticker