Re: Reply-To -> CC?

[Michael Heerdegen]

Jean Louis <bugs@gnu.support> writes:

> You can do to a degree, setup Mail-Followup-To header in your emails
> to the mailing lists where you are subscribed to, and then list reply
> feature in email clients will or should honor it. You would get Cc if
> you would not have that header like Pankaj.

You answered to me, Michael.  My original question involved a dog
school, but no mailing lists.

My case is a private conversation between me and the dog school, and a
third person I want to CC (in some sense of receiving at least) all
messages of the conversation (the third person is not the dog).

Would you recommend Mail-Followup-To in this case, too?  Can I specify
multiple addresses there?

TIA,

Michael.