noun
regular post office; ordinary post office
Refers to a standard, non-specialized post office, as opposed to a central or large-scale office. Often used in contrast with 中央郵便局 (central post office) or 特定郵便局 (designated post office).
この町には普通郵便局が一つしかありません。
There is only one regular post office in this town.
普通郵便局で
Regular post offices also handle Yu-Pack parcels.