On Wed, 2007-05-16 at 07:47 -0400, Charles Marcus wrote: > >> Although one possibility would be treat mailboxes a bit similarly > >> than keywords. So that when a message is copied to another mailbox, > >> the message in dbox file is updated to contain information that it > >> exists in such and such mailboxes. Hmm. Perhaps that would be good > >> enough, yes. > > > Yes, I think treating mailboxes similary to keywords is ideal. There > > really is no reason to physically separate mailboxes on disk. All > > that is needed is this logical separation if it can be done in a > > reliable way. > > > > Or maybe track this in mailbox-specific index files, and also have a > > corespodning text file that stores a list of messages that are > > contained in that mailbox... similar to maildir's dovecot-uidlist > > file. Then if you lose the index you can rebuild the index from the > > text file. > > This sounds suspiciously like 'virtual folders', that are supported by > both Evolution and Thunderbird... how do they do it?
They're based on filtering rules. I don't think they support "copying" messages. So the virtual folders are easily rebuilt by just re-applying the filters into all the messages.
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