imap_header, Thread id

From: Date: Tue, 05 Dec 2000 15:19:34 +0000
Subject: imap_header, Thread id
Groups: php.general 
Request: Send a blank email to php-general+get-28717@lists.php.net to get a copy of this message
Hello all I'm a little bit confused about the header information, which is returned after the use of imap_header($connectionID, $msg_num); when I echo the header on the screen, I can't figure out what really link the messages together. I can see that some headers have a message_id and references and some others have only one of them or none of them. I wonder how it is possible to organize the messages in threads? I appreciate your help. Sincerely yours //babak

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