Category
page 1Types of mail
letter
written message from one to another

envelope
thumb|upright=1.35|alt=Front of an envelope mailed in the U.S. in 1906, with a postage stamp and address|Front of an envelope mailed in the U.S. in 1906, with a postage stamp and address
thumb|upright=1.35|alt=Back of the above envelope, showing an additional receiving office postmark|Back of the above envelope, showing an additional receiving post office [[postmark]]

telegram
A telegram is a written or printed message, originally sent through telegraphy. The use of the telegrams was popular for social and business correspondence in the latter half of the 19th and the first half of the 20th century. Even in the telephone age, the telegram remained popular, and spawned its own style of writing that in turn persisted in other media. Telegram services still exist today, though the popularity has largely waned, replaced by other forms of text communication.
alt=Western Union telegram sent to President Dwight Eisenhower wishing him a speedy recovery from his heart attack
postal stationery
stationery item with imprinted stamp
printed matter
printed material produced by printers or publishers

cecogram
Small parcel
type of shipping package
Human mail
transport of a person through the postal system
dead letter mail
mail item for which there is no valid delivery address