[Dovecot] More than one inbox possible ?

[Schoch Christian]

I wanted to know if more than one INBOX - entry is possible.

My situation:

Three users with user at domain
One Mail-Adress office at domain, where all three users can get the mails.
But i dont want to copy the mails from office to the user (like 
mailinglist), because if one reads a new mail it should be marked as 
read at all users. Same with answered and deleted.

Thanks in advance,
Christian