On Feb 24, 2010, at 2:13 PM, Timo Sirainen wrote:

On 24.2.2010, at 22.08, WJCarpenter wrote:

This use of subscriptions is a terrible abuse of IMAP. Like most terrible abuses, it's a-ok to choose for yourself if you're an advanced user, but anyone who has done support for a broad user base knows that a client should *NEVER* act like this as the default. Subscriptions are brittle and non-portable and hiding mailboxes based on them leads only to floods of "Where is all my mail you screwed up my life!!!!" interactions.

I'm genuinely confused by this come-back.  Could you elaborate?

Why is having subscriptions (and, specifically, some folders to which you are not subscribed) a terrible abuse of IMAP? What is non-portable about subscriptions? The IMAP protocol supports them directly.

I don't think it's abuse, but the I don't like the clients' UI for them. http://imapwiki.org/ClientImplementation/MailboxList#Subscriptions and the next chapter explains how I'd like them to work.

Excellent thoughts.

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