[Ffmpeg-devel] [OT] How to send e-mails compliant with mailman'sthreading with Thunderbird?

[Rich Felker]

On Fri, Sep 01, 2006 at 12:47:24AM +0200, V?ctor Paesa wrote:
> Hi,
> 
> > At first I used to write to the list using my Hotmail account and Outlook
> > Express. That combination obviously screwed up all quoting and the
> > threading in the archives. My e-mails were scattered all over the place
> > being identified as replies to anything (in the ffmpeg-devel archives)...
> >
> > So I switched to Thunderbird, but my e-mails still screwed up the
> > threading. Now I switched e-mail accounts to another server (I thought it
> > was Hotmail or the Hotmail plugin in ThunderBird that was doing something
> > non-compliant). But I see that I'm still causing the same problems in the
> > threads. Using SquirrelMail (Webmail) also caused the same thing, which is
> > weird, since I see other people using SquirrelMail with success on the
> > list.
> >
> 
> I also suffered that weird behaviour of Hotmail.
> I'm no mail expert, so I just switched to another webmail provider, that is
> offering SquirrelMail. Since in your case didn't work, I'm wondering
> if the problem is the mail server your provider uses, and not in the
> mail clients you are trying ...

If the mail server can break this it's beyond broken. The only thing
that matters for threading is that your "In-Reply-To:" header matches
the "Message-ID:" header of the mail you're replying to. Some systems
may use other heuristics to aid threading but that rule is the key.

Rich