#mail  the bags of letters and packages that are transported by the postal service
  supertype:  #message  a communication (usually brief) that is written or spoken or signaled; "he sent a three-word message"
  subtype:  #1st_class  #express_mail  #parcel_post  #bulk_mail  #third-class_mail  #airmail {#air_mail #surface_mail}  #registered_mail  #special_delivery
  part:  #missive__letter  a written message addressed to a person or organization; "wrote an indignant letter to the editor"
     part:  #postscript__PS  a note appended to a letter after the signature
     part:  #name_and_address__address__addres  written directions for finding some location; written on letters or packages that are to be delivered to that location
        part:  #zip_code__zipcode__postal_code  a code of letters and digits added to a postal address to aid in the sorting of mail

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