Return-Path: <sender@example.com>
Date: Sun, 01 Jan 2000 00:00:00 +0000
From: sender@example.com
To: =?ISO-8859-2?Q?nicpo=F1?= <bar@example.pl>, "foo" <foo@example.pl>
Subject: Subject text
Content-Type: text/html; charset=iso-8859-2
Content-Transfer-Encoding: 8bit
Content-Disposition: inline

<div>html content</div>