Hans Gomme ([EMAIL PROTECTED]) wrote: > I'm not sure but I think normal the MUA's I know do the > threading by using the message ID. Normal every thread have > a starting message id and if you look for example the > message ID here (Message-Id: > <[EMAIL PROTECTED]>) will be during > the thread allways the same (local part) only if a reply of > a reply follows the host part change. > > But I'm not the real expert in this thing I only think to > remember to read something bout the threading and how it > normal works in MUA's.
The message ID will be different for each mail within a thread, but there is an In-Reply-To field that contains the message ID of the message replied to; this is used for threading. For example, copying from the header of your message: Message-ID: <[EMAIL PROTECTED]> In-Reply-To: <[EMAIL PROTECTED]> <[EMAIL PROTECTED]> is the ID of Barbara's message that you replied to. However, sometimes threading doesn't work, either because someone participating in an exchange doesn't use reply or because the reply is to a message within a digest (which has its own message ID that is not connected to any thread). Or someone hits "Reply", but edits the subject as he really wants to start a new thread. In the first case, the thread breaks up into two subthreads, and in the second case, mail clients supporting threading will display the message within a thread it doesn't belong to. > The List-id field was only a smal problem for me. And for > me it's not so necessary like the possibility to sort by > thread. But thankfully, filtering for List-id isn't a problem at all; you can do it if you want. If the mail headers do contain a List-id field, that is: of the 16 mailing lists I've subscribed to, only 6 use "list-id". - Michael Michael J. Hußmann E-mail: [EMAIL PROTECTED] WWW (personal): http://michael-hussmann.de WWW (professional): http://digicam-experts.de
