Someone has mixed the outgoing letters into the letter tray for returned mail.

How to say “Someone has mixed the outgoing letters into the letter tray for returned mail.” in Japanese

In Japanese

発送(はっそう)する手紙(てがみ)が、返送用(へんそうよう)の書類(しょるい)トレーに入(はい)ってる。誰(だれ)か入(い)れ間違(まちが)えたみたい。

Hassō suru tegami ga, hensō-yō no shorui torē ni haitteru. Dareka iremachigaeta mitai.

Someone has mixed the outgoing letters into the letter tray for returned mail. in other languages