We cannot send the mail to the recipient due to invalid mailing address. Kindly provide correct address asap. Thank you.

这件邮件的寄达地址不正确，我们无法将它投递给收件人，请你尽快正确的寄达地址。谢谢。

youdao

Users can send mail to a single recipient or broadcast it to multiple users.

用户可以把邮件发送给一个接收者，或者传送给多个用户。

youdao

Its speediness results from its ability to trigger the recipient's e-mail program to send a copy of itself to everyone listed in the program's address book.

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