The lonely husband of a famous female comedian strikes up an unlikely friendship with the neighborhood's sad-sack mailman, ultimately forming a successful, albeit unusual, musical collaboration that blends the line between fantasy and reality.
| Actor | Role |
|---|---|
| GGreg BratmanGreg | Greg |
| DDusty BrownDusty | Dusty |
 Sutton FosterAmy | Amy |
 Ellie KemperJulie | Julie |
 Jack McBrayerPostal Lackey | Postal Lackey |
 Tony HalePostal Boss | Postal Boss |
 Jim GaffiganMC | MC |
 Tommy DeweyJulie's Brother | Julie's Brother |