Content-Type: multipart/mixed; boundary="===============8484938434343225034=="
MIME-Version: 1.0
Subject: Test Email Document
From: John Doe <john.doe@example.com>
To: Jane Smith <jane.smith@example.com>
Date: Wed, 18 Dec 2024 10:00:00 +0000
CC: cc.person@example.com

--===============8484938434343225034==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit


This is a test email with multiple parts.

It contains:
- Plain text content
- An attachment
- Various headers

Best regards,
John Doe

--===============8484938434343225034==
Content-Type: application/txt
MIME-Version: 1.0
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="test.txt"

VGhpcyBpcyB0ZXN0IGF0dGFjaG1lbnQgY29udGVudA==

--===============8484938434343225034==--