> When you bunzip2ed the archive you got a mbox mail file. If a user
> needed to go through their archive I just created a decompressed copy
> of the file and put it under ~/mail, and they subscribed to it as they
> would any other IMAP folder.
>   

Always_bcc is similar, but it does not show who the message was sent to, 
unless you open it, which wont work for us.