godan verb (-u)
miss sending; miss delivering; send to the wrong place
Used when something is sent or delivered incorrectly, such as to the wrong person or address. Often implies a mistake in the dispatch process.
メールを出し違えて、違う人に送ってしまった。
I sent the email to the wrong person by mistake.
荷物を出し違えない
Please check the address carefully so you don't send the package to the wrong place.