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+Date: Thu, 11 Jul 2013 17:52:07 -0400\r
+From: Austin Clements <amdragon@MIT.EDU>\r
+To: Vladimir Marek <Vladimir.Marek@Oracle.COM>\r
+Subject: Re: Re: How to find mails which are sent to 'undisclosed-recipients'\r
+ ?\r
+Message-ID: <20130711215207.GR2214@mit.edu>\r
+References: <20130711152427.GA16395@virt.cz.oracle.com>\r
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+\r
+Quoth Vladimir Marek on Jul 11 at 8:03 pm:\r
+> > > Since my mail works in a way that it hides everything but what I\r
+> > > selected to be shown to me, I was overlooking all mails which where sent\r
+> > > to undisclosed-recipients. I tried to match such mails by\r
+> > > to:undisclosed-recipients but that does not seem to work. Is there any\r
+> > > workaround to find such mails?\r
+> > \r
+> > I have some mail with this To header:\r
+> > \r
+> > To: Undisclosed recipients <Undisclosed recipients:;>\r
+> > \r
+> > I can find them with the search to:"Undisclosed recipients". Note the quotes.\r
+> \r
+> The To: line in my case looks like:\r
+> \r
+> To: undisclosed-recipients:;\r
+\r
+RFC822 group syntax! Fascinating. You're right that notmuch doesn't\r
+index group names, though I think it could with a small addition to\r
+_index_address_group. It already descends into group addresses, it\r
+just currently ignores the group name.\r
+\r
+> And I'm not able to find it in any way. Maybe notmuch won't parse it as an\r
+> email and so won't store the To header to the database?\r
+\r
+I suspect it is indexing it. The only thing notmuch requires is that\r
+the message be at least slightly well-formed and have either a From,\r
+Subject, or To header. You can find the message's Message-ID header\r
+and try a search like\r
+\r
+ notmuch search id:<message-id>\r
+\r
+> Any idea if there is a way to dump what notmuch knows about given email?\r
+\r
+There's no easy way. You can use Xapian's quest and delve tools to\r
+find the document ID and get the term list of a message, but this is a\r
+*very* low-level view of what notmuch knows.\r
+\r
+> Thank you\r