System Administrator <nobody@nowhere.invalid>
Subject: example message - with attachment
Mime-Version: 1.0
Content-Type: multipart/mixed; boundary="qDbXVdCdHGoSgWSk"
Content-Disposition: inline


--qDbXVdCdHGoSgWSk
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

This is a simple message with one attached file.

--qDbXVdCdHGoSgWSk
Content-Type: image/png
Content-Disposition: attachment; filename="green.png"
Content-Transfer-Encoding: base64

iVBORw0KGgoAAAANSUhEUgAAACAAAAAgBAMAAACBVGfHAAAAGFBMVEUAAAAAPwAAQAAAfwAA
gAAAvwAAwAAA/wAzKRFfAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB3RJTUUH1AseEwQI9rq1
OwAAAEZJREFUKBVjYHItRwEMjGYo/HIGJlM0AUZ0LRhmECFAhqEYDiPsDnRbMPyCIYDpOQwz
CLuDGlrQPceIbiimSwk7jLAKNFsALXrYId7wvhwAAAAASUVORK5CYII=

--qDbXVdCdHGoSgWSk--