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+Date: Sat, 13 Jun 2015 14:47:00 -0400\r
+Message-ID:\r
+ <CAJhTkNhYew6H-bptACTew3gN3DLWg6agTYu8hAkdwFS=z4VFWg@mail.gmail.com>\r
+Subject: search query "replytoid:<blah>"\r
+From: Xu Wang <xuwang762@gmail.com>\r
+To: notmuch@notmuchmail.org\r
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+\r
+Dear all,\r
+\r
+Is it possible to search based on which message ID a message\r
+*responds* to? For example, suppose message id is MESSAGEID. I want to\r
+find all emails that responded to MESSAGEID. How to enter such a query\r
+into notmuch?\r
+\r
+Kind regards,\r
+\r
+Xu\r