From: Alice <alice@example.org>
Subject: Inline image
Date: Sat, 01 Aug 2026 10:00:00 +0000
Message-ID: <cid-1@example.org>
MIME-Version: 1.0
Content-Type: multipart/related; boundary="REL"

--REL
Content-Type: text/html; charset=utf-8

<html><body><img src="cid:logo@example.org"></body></html>
--REL
Content-Type: image/png
Content-Transfer-Encoding: base64
Content-ID: <logo@example.org>

iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+M9QDwADhgGAWjR9
awAAAABJRU5ErkJggg==
--REL--
