[RCU] Threaded view

Jérôme jerome at jolimont.fr
Thu Aug 25 17:45:27 CEST 2011

Thu, 25 Aug 2011 17:28:45 +0200
Thomas Schober a écrit:

> Hi,

> i tried to read my gmail mails from within roundcube, which is working
> great. The only bad thing is, that you can't use threaded view with gmail.
> Is there any plugin available, which turns that feature on ? I know, that
> the standard implementation of roundcube uses the functionality of the imap
> server to group conversations but it looks like gmail did not activate that
> feature on their servers. Is there any other possibility to get it working
> with gmail ?

I might be wrong but here's my understanding.

While I am replying to you, my email client adds a header to my answer :

<CAMOwjat1OjbraFUwVBMDSwaczTSnnP-jMotO+wG+knyo2tgUkA at mail.gmail.com>

This is the header that is used by clients (including roundcube, I suppose) to
order the messages by thread while displaying them. 

I don't see why this ordering would need any server feature, as long as the
proper headers are in the messages, which depends on each sender client.

In other words, I see no explanation for your issue.

Note that some clients (some of which, not surprisingly, were engineered
in Redmond) don't add that header and therefore break the threads. To
circumvent that, some clients (at least mine, claws-mail) propose to group by
thread and subject. This can trigger false grouping, by grouping two messages
with the same subject but no link. AFAIK, roundcube does not do that anyway.

Hmmm. Sorry for not helping. Just sharing the little knowledge I have on the

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