Nah, if someone sends me HTML it gets parsed into plaintext and if it doesn't work I don't care what's in it. You want to send me a pretty document - feel free to send me an attachment or a link. HTML emails are always ridden with superfluous disclaimers and signatures not using the -- convention, they're a waste of time.

I got absolutely no problem with that, I just don't think you're going to win many converts.

I sympathize, but I'd much rather somebody send me an HTML email than an attached Word document, which is the next likely candidate in most workplaces.

Use them to send embedded screen captures at work. Could be an attachment, but then its hard to put into context.

You may have to parse HTML email, but you don't have to send it.