[Akonadi] [Bug 338186] Since updating to the latest Kubuntu packages Kmail is not picking up imap mail.

[Christian Mollekopf]

https://bugs.kde.org/show_bug.cgi?id=338186

--- Comment #53 from Christian Mollekopf <mollekopf at kolabsys.com> ---
(In reply to Marcel Naziri from comment #51)
> (In reply to Carsten Pfeiffer from comment #50)
> > (In reply to Marcel Naziri from comment #49)
> > > Anyone tested my patch for ImapInterval in kdepimlibs?
> > 
> > Will do so tonight or tomorrow night. Completely missed that the patch is
> > attached.
> 
> I realized that with my patch flags (e.g. read/unread) changed by another
> client aren't reflected in kmail when refreshing the folder. not until
> mailbox content is changed (new mail arrived or something moved) the flags
> are updated.
> 
> Is this also happening with Christians patch v2?

Please note that your patch is really rather a workaround that cannot be
upstreamed. Thanks a lot for your analysis though as it pointed me in the right
direction.

What's currently missing from my patch is that we are not using the
optimization that avoid downloading all messages on every sync. This is because
we usually rely on a combination of message-count and uidnext to detect if new
messages are available or old ones have been deleted. Whitout uidnext we could
still avoid a sync if the messagecount remains the same, but then we would run
into the problem that we for instance would never notice if i.e. one message
has been removed and another one added (which is nasty because it's very
unpredictable).

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