A simple email using MIME protocol:

From: "David Willson"
To: "John Date"
Subject: Just Say Hi!
Date: Fri, 28 Feb 2003 18:12:32 -0400
Message-ID:
MIME-Version: 1.0
Content-Type: text/plain;
Content-Transfer-Encoding: 7bit;

Hi David! How are you doing?