On Sun, 2007-09-16 at 20:56 -0700, Troy Engel wrote: > IMAP allows folders present on the server which are not presented to the > client when it logs in, hence the idea of subscribing. Unsubscribed > folders are great for archiving old stuff that you don't really need to > see but need to keep around. By not subscribing after you renamed the > folder to include a dot it remained invisible to your client.
This is actually client-specific, some clients don't support subscriptions at all and others can be configured to use or not use them. I've written a bit more about how I think they should be implemented in http://www.imapwiki.org/ClientImplementation/MailboxList -> Subscriptions.
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