Contains

• letter

  A written message addressed to a person or organization; "mailed an indignant letter to the...

• third class

  Mail consisting of printed matter qualifying for reduced postal rates.

• first class

  Mail that includes letters and postcards and packages sealed against inspection.

• express

  Mail that is distributed by a rapid and efficient system.

• airmail

  Letters and packages that are transported by aircraft.

• air mail

  Mail that is sent by air transport.

• surface mail

  Mail that is sent by land or sea.

• registered mail

  Mail that is registered by the post office when sent in order to assure safe de...

• special delivery

  Mail that is delivered by a special carrier (for an additional charge).

• parcel post

  Postal service that handles packages.

• bulk mail

  Mail consisting of large numbers of identical items (circulars or advertisements) sent...