[Dovecot] Shared folders?

I haven't seen any info on this so I thought I'd ask.

Is there support for shared IMAP folders?

Quite a few people at work subscribe to the Linux Kernel Mailing List. I thought it would make more sense if there could be a shared LKML folder that they all could use. This would save disk space.

Is this posssible? If so how?

I am also looking into the idea of doing a local newsgroup of the mailing list but I don't have a news server software setup at the moment.

John