noun
postal transfer
A money transfer service provided by the post office, often used for bill payments or sending money via postal giro.
公共料金は郵便振替で支払えます。
You can pay utility bills by postal transfer.
銀行振込 is a bank transfer, while 郵便振替 is a postal transfer service.
Compound of 郵便 (postal) and 振替 (transfer).