On April 20, 1871,
the inaugural relay service between Tokyo and Osaka began. The journey took 3
days and 6 hours, and was run by dark blue happi coat-clad postmen.
The postal service
in Japan is declared a monopoly i.e. no privatized courier company can have the
right to compete with it. International mail services arrived slightly later. In
1875, the first direct route with the United States was developed, and this was
a historic milestone in the development of the Japanese post.