+cat <<EOF > ${MAIL_DIR}/multipart
+From: Carl Worth <cworth@cworth.org>
+To: cworth@cworth.org
+Subject: Multipart message
+Date: Fri, 05 Jan 2001 15:43:57 +0000
+User-Agent: Notmuch/0.5 (http://notmuchmail.org) Emacs/23.3.1 (i486-pc-linux-gnu)
+Message-ID: <87liy5ap00.fsf@yoom.home.cworth.org>
+MIME-Version: 1.0
+EOF
+
+cat multipart_body >> ${MAIL_DIR}/multipart
+