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From "Steve Brewin (JIRA)" <server-...@james.apache.org>
Subject [jira] [Commented] (IMAP-380) Implement IMAP LIST Extension for Special-Use Mailboxes, RFC 6154
Date Tue, 18 Aug 2015 17:03:46 GMT

    [ https://issues.apache.org/jira/browse/IMAP-380?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14701597#comment-14701597

Steve Brewin commented on IMAP-380:

BTW: While Microsoft Outlook prefers RFC 6154 it will use XLIST if advertised in the response
to the CAPABILITY command. Wether RFC 6154 or XLIST, it does require the key special folders
to be answered so it knows what to use. Therefore implementing these capabilities without
providing a means to identify and report the special qualities of a mailbox is useless.

> Implement IMAP LIST Extension for Special-Use Mailboxes, RFC 6154
> -----------------------------------------------------------------
>                 Key: IMAP-380
>                 URL: https://issues.apache.org/jira/browse/IMAP-380
>             Project: James Imap
>          Issue Type: New Feature
>    Affects Versions: 0.3
>            Reporter: Steve Brewin
> From the RFC 6154:
>   "Some IMAP message stores include special-use mailboxes, such as those
>    used to hold draft messages or sent messages.  Many mail clients
>    allow users to specify where draft or sent messages should be put,
>    but configuring them requires that the user know which mailboxes the
>    server has set aside for these purposes."
> Some mail clients, notably Microsoft Outlook 2013 and later, require RFC 6154  support
to function correctly. RFC 6154 is a standardisation of Google's XLIST capability that also
extends the CREATE command to allow the designation of special use mailboxes.
> Some work is already committed to support XLIST. An implementer might use this as a starting
point as RFC 6154 and XLIST are very similar. The work is incomplete; the CAPABILITY command
does not announce it and there is no provision for designating a mailbox as special.
> After implementing RFC 6154 fully enabling XLIST support would be trivial, though most
mail clients and even Google's GMail have moved on to the official RFC. 

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