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封筒と矢印

envelope with arrow

送信トレイ

outbox tray

受信トレイ

inbox tray

荷物

package

旗が上がった閉じた郵便受け

closed mailbox with raised flag

旗が下がった閉じた郵便受け

closed mailbox with lowered flag

旗が上がった開いた郵便受け

open mailbox with raised flag

旗が下がった開いた郵便受け

open mailbox with lowered flag