[Dovecot] Sharing mails with other users without copying data

Hello.

We would like to share mails without copying the data to another mailbox.

The problem is that we use exim4 for delivery and maildir++ format.

Would it be feasible to create a symlink or hardlink using the COPY or COPYlike (extension) command?

Regards. Erny

Ernesto Revilla Yaco Sistemas +34 954 500 057