also: めいるぼっくす
noun
Physical box for receiving postal mail, such as a home mailbox or a public post box.
See also: 郵便受け
新しい家のメールボックスに鍵がかかっている。
The mailbox at the new house is locked.
noun
Computing term for an electronic mailbox or inbox, such as in email or messaging systems.
メールボックスがいっぱいで新しいメッセージが受信できません。
The mailbox is full and cannot receive new messages.