Misdelivery; sending something to the wrong recipient or address (applied to mail, parcels, emails, etc.).
重要書類を誤送してしまい、大慌てで回収を依頼した。
I mistakenly sent an important document to the wrong address and hurriedly asked for it to be retrieved.
メールの誤送を防ぐため、送信前に宛先を再確認しましょう。
To prevent mis-sent emails, check the recipients again before sending.
荷物の誤送が原因で顧客対応に時間がかかった。
Because of a misdelivered package, customer support took longer than usual.