From: Sam Rivera <sam@meridiansupply.example>
To: Alex SAMPLE <alex@brightside.example>
Subject: Disposition Notification SAMPLE
Date: Wed, 22 Jul 2026 10:15:00 -0400
Message-ID: <wi-mdn@meridiansupply.example>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8

The message was displayed (SAMPLE MDN shape).