Where must the Standard Endorsement be placed on a mail item?

The Standard Endorsement must be placed directly below the return address on a mail item. This positioning is important because it ensures that the endorsement remains visible and legible to postal service staff. By placing it directly under the return address, the endorsement is easily identifiable in relation to both the sender's information and the addressing of the package. Proper placement helps in streamlining processing and reduces the chances of misinterpretation or misdelivery. This alignment also adheres to postal regulations, which are designed to maintain uniformity in mail handling and ensure that endorsements are appropriately displayed, aiding in efficient delivery.