+test_begin_subtest "From guessing: multiple Delivered-To"
+add_message '[from]="Sender <sender@example.com>"' \
+ '[to]="Recipient <recipient@example.com>"' \
+ '[subject]="From guessing"' \
+ '[date]="Tue, 05 Jan 2010 15:43:56 -0000"' \
+ '[body]="From guessing"' \
+ '[header]="Delivered-To: test_suite_other@notmuchmail.org
+Delivered-To: test_suite@notmuchmail.org"'
+
+output=$(notmuch reply id:${gen_msg_id} 2>&1 && echo OK)
+test_expect_equal "$output" "From: Notmuch Test Suite <test_suite@notmuchmail.org>
+Subject: Re: From guessing
+To: Sender <sender@example.com>, Recipient <recipient@example.com>
+In-Reply-To: <${gen_msg_id}>
+References: <${gen_msg_id}>
+
+On Tue, 05 Jan 2010 15:43:56 -0000, Sender <sender@example.com> wrote:
+> From guessing
+OK"
+