Return-Path: <foo@bar.com>
From: Foo Bar <foo@bar.com>
To: category@foo.com
Subject: This is a foo topic
Date: Fri, 15 Jan 2016 00:12:43 +0100
Message-ID: <53@foo.bar.mail>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

Hey, this is an incoming email that will be ignored ;)