I think HTML emails are unnecessary.
It's only useful for advertising, marketing and tracking.
If you want to show fancy css and design, link a website.
If email was used as what it was designed for, writing electronic letters to each other and not spam and ads and marketing, we wouldn't have any of these problems.
I can't agree. I quite like html email. I just wish that it had an extremely cutdown subset (just colors, a few "header" sizes, italic, bold, underlined links), NO CSS allowed, no specifying of fonts other than say mono or "other". Maybe inline images links so that attached images could insert. No tables. Only <li> or <ul> Such a system would still be completely readable as plain old text. Now everyone thinks they have to use the kitchen sink approach or that there's not a middle ground.