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  2. Mail Isolation Control and Tracking - Wikipedia

    en.wikipedia.org/wiki/Mail_Isolation_Control_and...

    The Postmaster General has stated that the system is primarily used for mail sorting, [2] though it also enables the USPS to retroactively track mail correspondence at the request of law enforcement. [2] It was created in the aftermath of the 2001 anthrax attacks that killed five people, including two postal workers.

  3. Intelligent Mail barcode - Wikipedia

    en.wikipedia.org/wiki/Intelligent_Mail_barcode

    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.

  4. Informed Delivery - Wikipedia

    en.wikipedia.org/wiki/Informed_Delivery

    The Postal Service takes measures to ensure the security and privacy of consumers’ mail. Because Informed Delivery offers increased visibility into both mail and packages being delivered to an individual’s address, USPS verifies identities of individuals, including the use of a mail-based verification letter.

  5. Package tracking - Wikipedia

    en.wikipedia.org/wiki/Package_tracking

    Tracking packages with stationary bar code reader in a warehouse sorting operation. Package tracking or package logging is the process of localizing shipping containers, mail and parcel post at different points of time during sorting, warehousing, and package delivery to verify their provenance and to predict and aid delivery.

  6. United States Postal Service - Wikipedia

    en.wikipedia.org/wiki/United_States_Postal_Service

    The full eagle logo, used in various versions from 1970 to 1993. The United States Postal Service (USPS), also known as the Post Office, U.S. Mail, or simply the Postal Service, is an independent agency of the executive branch of the United States federal government responsible for providing postal service in the United States, its insular areas and associated states.

  7. Registered mail - Wikipedia

    en.wikipedia.org/wiki/Registered_mail

    The registration of letters as known today was introduced in 1841 in Great Britain. The letter had to be enclosed within a large sheet of green paper. The green sheet was addressed to the Post Office where the recipient lived. The green sheet was then used as a receipt and was returned to the office of origin after delivery.