IMAP annotation for groupware folder descriptions

Gunnar Wrobel wrobel at
Tue Nov 13 16:07:45 CET 2007

Bernhard Reiter <bernhard at> writes:

> On Tuesday 06 November 2007 15:29, Gunnar Wrobel wrote:
>> >> We should define a second, optional possibility for setting the folder
>> >> type. This approach should use standard IMAP capabilities. This is
>> >> something that a client MAY implement.
>> >
>> > I first feeling is to not add an additional method.
>> > Choice is good in principle, but in this regard I would rather
>> > have a higher burden for Kolab Clients and to not water down the brand.
>> > Kolab2 compliant servers would need to implement the freebusy mechanism
>> > and the incidences-for funcationality as well.
>> I don't want to require the clients to implement this. I just think it
>> would be a desireable extension. Especially for Horde.
> This is always a difficult strategic decision.
> I would not make this "optional" for Kolab Clients, because the user
> will not get a full Kolab experience unless the server supports
> freebusy generation and some other stuff. 

Okay, that is true.

> The servers that want to do this,
> can do so quite easily including the ANNOTATEMORE extension.
> Client can implement anything optional, but it would not be Kolab I guess.
> I hope that we can increase the pressure to actually lobby for a standard way
> to save additional information for a folder. ANNOTATEMORE seems good for this 
> purpose and we have a leading IMAP server implementing it already. 

The METADATA extension is certainly the right solution for our
purposes. I won't disagree. I just have the feeling that having Cyrus
supporting this for the last few years did not really help in getting
this forward.

> It would be possible to create patches for the others. 
> As with many extensions this has proven useful and the more people
> that realise the pressure to include it in other implementation will grow.

Okay, maybe I'm just being impatient :) After all this is a major
problem for on a distro like Gentoo.

Anyway I'll try to get this implemented into Horde at some point since
I'd really like to see people storing their Groupware data on Google
Mail in a Kolab format. I guess we'd find some users for that :)



> Bernhard
> -- 
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