急：请教如何取消已经发出的EMAIL（假设收信人还没有打开EMAIL）

我FORWARD错了一封EMAIL。EMAIL已经发出。
请问：
1。如何取消
2。如果收信人还没有打开EMAIL， 我如何让她们打不开。
3。有些人可能已经看到了，如何让她们想再看时，打不开。无法FORWARD 给别人。
4。Mary ORIGIANL EMAIL

I really wish you had not forwarded the e-mail with the message I sent you about xxxxx's mother to everyone on the list.
The comment I made to you was private...not for all eyes

5。It is about my girl's class. Someone always complain about the food we brought.

6. I didn't ententionally forward the email to others, I just want to use the name list, but forgot to delete the information about the email.

7. If everyone has seen the email, what should I do to recover the damage between me and Mary. I really forgot about delete the old part of the email.

HELP, I don't want to lose a friend. We just have an issue between us,
I don't want she thought THIS was my 报复。 I just want to use the email address. for god sake!