In 1900 (as needed) the system was carried out in post offices throughout the nation, the use of private mailing cards was permitted, and finally, in 1905, the system was brought into full practice at post offices throughout the nation.
翌1900年には（必要に応じてではあるが）全国の郵便局で実施、私製葉書の使用も認められ、1905年に完全に全国の郵便局で実施されるようになった。