郵便局が無駄遣いか? https://nsbjsw.com/2019/10/09/%e9%83%b5%e4%be%bf%e5%b1%80%e3%81%8c%e7%84%a1%e9%a7%84%e9%81%a3%e3%81%84%e3%81%8b/