[s-cars] Re-Threading

[Kevin Day]

On Fri, Oct 15, 2004 at 06:51:53PM -0400, Igor Kessel wrote:
> Mark Pollan wrote:
> >Excuse my ignorance Igor, but I have done this bunches of times.  Does a
> >unique "thread id" or something get assigned that is only broken/reassigned
> >to a brand new post?
>
> I was guilty of doing the same exact thing until I installed Mozilla 
> Firefox and found out that apparently yes indeed the unique "thread id" 
> or something get assigned to a brand new thread.

Guys,

Threading in mail readers is conventionally done using the "In-Reply-To"
field in the message header.  Not only Firefox, but many other mail
readers support this as well.  Each message has a unique ID generated by
the sender's mail transport agent ("Message-ID"), and when replying a well
behaved mail program will take the Message ID of the original message
and put it in the In-Reply-To field of the new message.

I think gmail adds its own heuristics to the conventional threading
algorithm.  

-Kevin