These are called snorkel boxes and they will also accept small packages on the back side of the box.(Above where the carrier retrieves the mail) Make sure that it will fit so it won't clog up the shoot in the front (drive up side)...Pull the door down and deposit parcel no bigger than a shoe box. Pull it again to be sure it dropped to the bottom.
Yes, for regular sized envelopes. There is a small-pig. drop inside the lobby, which is always open.
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