cc to myself in some cases only?

[Erik Simon]

Dear and happy mutt users,

I would like to CC a message to my email address, but not for all
patterns. I tried a send-hook:

        send-hook .       my_hdr Cc: <address>
        send-hook foo.bar my_hdr Cc:

It works, except than the changes take effect only for the subsequent
message. Any hint how I could do this?

Erik