Plugin contact-form-7 : Get Value and answer for mail

Hi,
I just try to make a new form with contact-form-7.
I read documentation and FAQ to find a solution to my needed.

I explain what I want to do :
I have in a form, a select zone.
[select* classe include_blank “6E1|email1” “4E4|email2,email3”]

When I setup the mail, in the from field, I used [Classe]. That’s give me email information, that’s OK

But I also need in the body of message that information : 6E1 or 4E4

How I can do that ?

It’s for a classroom forms where I don’t want to show emails’parents to whose you subscribe the forms.

Thank’s for your help !!
Regards.