Who is Jerry Seinfeld's postal nemesis?

Jerry Seinfeld’s postal nemesis is Newman. The character is a recurring United States Postal Service employee on Seinfeld, portrayed by Wayne Knight, and is Jerry’s principal arch-nemesis.

Newman lives in the same apartment building as Jerry and is closely associated with Kramer. Jerry’s contemptuous greeting, “Hello, Newman,” became one of the show’s recurring comedic exchanges.

The character’s postal job drives several storylines, including plots involving mail delivery, junk mail, and a Postal Service truck. The stored response appears to confuse Newman with an unrelated name joke; it does not identify the character asked for by the question.