title: Some email recipients get messages with =0D or =3D characters
body: <p>I have a LAMP web application that emails users.  Some users have complained that instead of seeing html email messages, they see weird sequences of characters such as =0D or =3D.   I can't reproduce this bug with any of my email clients : gmail, yahoo mail, hotmail, thunderbird, blackberry or iphone.  Does anyone know what's going on and how to fix this?</p>