When documents, packages, or cargoes are not yet scooped up or delivered to the intended recipient, they are referred to as unclaimed mail. Often, these items remain in postal facilities, courier offices, or lost-and-found centers due to wrong addresses, minimal postage, or non-retrievability. Postal regulations determine whether unclaimed mail is donated, sold at auction, sent back to the sender, or disposed of after a specified amount of time. It might include official records, private letters, and vessels carrying various goods.