From: Caio Tiago Oliveira <caiot1@...>
Date: 2005-05-09T08:03:26+09:00
Subject: Re: Vacation - email me when I. is gone or people FINALLY stop responding to him

Nikolai Weibull, 08-05-2005 09:08:
> Francis Hwang, May 8:
> 
>> Depending on what sort of hooks you have for filtering: Emails usually
>> contain an In-Reply-To header, which is what mail readers use for
>> threading. 
> 
> The References header is useful as well,
>         nikolai


Nikolai, the "References" header is the only obvious way of doing it to 
keep track of the replies, so it's a lot more useful.

"Message-ID" for the one of the guy.


Is the references header the mail agents use to organize the mail in 
threads (some of them also use the subject).