翻译：（急）这是一封错发给我的非常重要的信件。请查看，并且和某某立刻联系。

It is a very important email sent to me by mistake. Please check it out,and contact with XX as soon as possible.

(emergency) You may make a mistake that you sent this very important letter/email to me. (如果是纸质的就是letter, 电子邮件就是email) Please check the letter/email and contact XXX as soon as possible.