| Host | |
| Don Morrow | |
| Announcers | |
| Bill Wendell Wayne Howell | |
| Broadcast | |
 | |
| Packager | |
| Merv Griffin Productions | |
Let's Play Post Office was a short-lived daytime game show where three contestants guessed the identity of a celebrity letter writer as the letter was read one line at a time. The set resembled a post office.
Gameplay
Three contestants were read "letters" written by a famous person and tried to identify the author from clues hidden in the letter. The faster the contestant guessed the identity, the more money they could win. A final "Zip Round" featured quick two-line messages worth $25 for correct answers to help determine the day's winner.
Studio
NBC Studio 6A, New York City, NY
Rating
Gallery
Trivia
- The set was later used on NBC's long-running sketch comedy series Saturday Night Live.
- The object of identifying who sent a fictional letter was later used as the E-Mail element of Merv Griffin's later series Click.