Date: Tue, 10 Jul 2018 01:03:11 +0000
From: "Joe Bloggs" <joe@example.com>
Message-ID: <my-message-id>
Subject: RFC 8621 Section 4.1.4 test
Content-Type: multipart/mixed; 
	boundary="boundary_0"


--boundary_0
Content-Disposition: inline
Content-Type: text/plain
Content-Transfer-Encoding: 7bit

Part A
--boundary_0
Content-Type: multipart/mixed; 
	boundary="boundary_1"


--boundary_1
Content-Type: multipart/alternative; 
	boundary="boundary_2"


--boundary_2
Content-Type: multipart/mixed; 
	boundary="boundary_3"


--boundary_3
Content-Disposition: inline
Content-Type: text/plain
Content-Transfer-Encoding: 7bit

Part B
--boundary_3
Content-Disposition: inline
Content-Type: image/jpeg
Content-Transfer-Encoding: base64

UGFydCBD

--boundary_3
Content-Disposition: inline
Content-Type: text/plain
Content-Transfer-Encoding: 7bit

Part D
--boundary_3--

--boundary_2
Content-Type: multipart/related; 
	boundary="boundary_4"


--boundary_4
Content-Type: text/html
Content-Transfer-Encoding: 7bit

Part E
--boundary_4
Content-Type: image/jpeg
Content-Transfer-Encoding: base64

UGFydCBG

--boundary_4--

--boundary_2--

--boundary_1
Content-Disposition: attachment
Content-Type: image/jpeg
Content-Transfer-Encoding: base64

UGFydCBH

--boundary_1
Content-Type: application/x-excel
Content-Transfer-Encoding: base64

UGFydCBI

--boundary_1
Content-Type: x-message/rfc822
Content-Transfer-Encoding: base64

UGFydCBK

--boundary_1--

--boundary_0
Content-Disposition: inline
Content-Type: text/plain
Content-Transfer-Encoding: 7bit

Part K
--boundary_0--