From: Alice <alice@example.net>
To: Bob <bob@example.net>
Subject: TNEF test
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="=-2UbcDuksJBAwUNBNW7UD"

--=-2UbcDuksJBAwUNBNW7UD
Content-Type: text/plain; charset=us-ascii; format=flowed

Test message body with example TNEF part from
https://github.com/Yeraze/ytnef

https://github.com/the-djmaze/snappymail/discussions/1012

--=-2UbcDuksJBAwUNBNW7UD
Content-Type: application/vnd.ms-tnef
Content-Disposition: attachment; filename=winmail.dat
Content-Transfer-Encoding: base64

[encoded data, 132594 characters]
dGxvb2tcT3V0bG9vay5wc3QAAAADAP4PBwAAAHpn

--=-2UbcDuksJBAwUNBNW7UD--

