无法投递的信件的英文怎么说

无法投递的信件的英文：
dead mail

Let the dead Bury the dead
往事不重提;一切向前看;过去就让它过去

Friendless is the dead
没有朋友者,等于是死人

It is a dead volcano.
那是座死火山。

Mars is a dead planet; a dead battery; dead soil; dead coals; the fire is dead.
火星是一个死星球；用完了的电池；贫瘠的土壤；熄灭了的煤；火已经熄灭了。

The dead can not be recalled to life.
死者不能复活。

Send the memo by express mail.
把这份备忘录用快递寄出。

mail and luggage van
邮政行李车

This parcel came in the mail today.
这个包裹是今天邮来的。

Cn you please confirm that you have received this mail.
您能否确认已收到此邮件

The mail was delivered late today.
今天邮件送得迟了。