[deafpolygon]

It's hard to do right, because the mail format has to deal with MIME types, and all kinds of ancient kludgy stuff. They send mail in multi-part, and you see the part that your mail client wants to render. Sometimes they send only html, sometimes you get text and html. Sometimes it's a an image embedded in the e-mail message.

On top of that every mail service wants to do something different.