Subject: Meeting confirmation
From: Maya Chen <[email-masked]>
To: Sam Rivera <[email-masked]>
Date: Thu, 15 Jan 2026 09:10:00 -0800

Hi Sam,

Confirming our meeting on the 20th. This message carries sample
DKIM-Signature, SPF, and Authentication-Results headers for testing email
authentication parsing. The signature value is a placeholder, not real crypto.

Maya