Produced when e-mail was becoming a mainstream form of communication, the episode reflected the popular prediction of the time that postal service would soon become obsolete.
Kramer gets an overabundance of Pottery Barn catalogs, which he saves up and angrily dumps at their local store.
Postmaster General Henry Atkins intimidates Kramer into receiving his mail again; as he leaves, Newman is led in with a bucket over his head and his hands zip tied together.
He says to Kramer, "Tell the world my story.” George's parents make up excuses to cut him short on his weekly phone call and leave the house when he visits.
Elaine has a "love at first sight" encounter with fact-checker Jack, and breaks up with David Puddy so she can date him.
While going through an old VHS tape, Jerry discovers a commercial that features Jack as "The Wiz", a mascot for the electronics store of the same name.
Spike Feresten wrote "The Junk Mail" largely as an expression of his frustration at getting Pottery Barn catalogs in his mailbox on a near daily basis.
Postal Service will retaliate for Kramer's refusal to receive his mail is a parody of a scene from the film Three Days of the Condor, when Joubert muses on how Turner might be killed by the CIA.
Writer Spike Feresten has not publicly commented on the scene where Henry Atkins intimidates Kramer, which has been subject to conflicting interpretations.