From: Alice <alice@example.org> To: Daniel <daniel@example.org> Subject: referencing in-reply-to-loop-21 Message-ID: <mid-loop-12@example.org> In-Reply-To: <mid-loop-21@example.org> Date: Thu, 16 Jun 2016 22:14:41 -0400 Note Message-ID and In-Reply-To: in file in-reply-to-loop-21