Subject: This is a test Mail
From: Test <syphdias@gmail.com>
To: Test <mymailbox@example.com>
References: <this-is-kinda-shiort@example.com> =?utf-8?q?=3Cthis-is-super-lo?=
 =?utf-8?q?ng-and-should-not-be-in-the-vacation-response-but-still-a-header?=
 =?utf-8?q?=40example=2Ecom=3E?=
Message-ID: <some-message-id@example.com>
Date: Fri, 17 Jan 2020 14:46:25 +0100
MIME-Version: 1.0
Content-Type: multipart/alternative;
 boundary="------------6C3D3513E1EA1B04ADB59FA3"
Content-Language: en-US

This is a multi-part message in MIME format.
--------------6C3D3513E1EA1B04ADB59FA3
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 8bit

This is a test Mail

--------------6C3D3513E1EA1B04ADB59FA3--