I know HTML email is widely considered to be Evil, however, it does get used and people will continue to want to use it. I know it's possible to embed images in the email for the markup to use - a lot of image spam does this - but I'm told by one of our marketing guys that a lot of 'corporate' rich-text email newsletters load images from websites instead.

What have other people experienced? I don't subscribe to people who send me such things, so I don't know.

Wade.