I think some people have finished writing New Year's cards and some will write them in the future. And I guess everyone is looking forward to the New Year's card that arrives during the New Year.
At the Nihonbashi Post Office in Chuo-ku, guests are invited on New Year's Day in recent years, and the New Year's Day Delivery Departure Ceremony is held.
Nihonbashi Post Office was located in the place where the modern postal system began in 1871, where Ekiji (later the Ministry of Posts and Telecommunications) and Post Office (currently Tokyo Central Post Office) were established. There is a commemorative inscription and a bronze statue of Maejima, known as the "father of modern Japanese mail" (↑pictured).
It seems that the origin of the mail originated in Nihonbashi because of its excellent transportation convenience.
Post (Nihonbashi Post Office) was created to commemorate the 100th anniversary of postal service establishment.
By the way, the first post in Japan was established in 1871, and at that time it was called "Shojo Atsumebako", and the official name of the current post is "Yubinsashidashibako" It seems to be. You can see images of each post in ↓ (from "White Paper on Information and Communications, Ministry of Internal Affairs and Communications for Kids / Beginning of Modern Postal System")
http://www.soumu.go.jp/joho_tsusin/kids/history/3/02.html
Nihonbashi Post Office Map
http://map.japanpost.jp/pc/syousai.php?id=300101163000
