This has been true since the beginning of HTML email. It hasn't stopped it from proliferating. It hasn't stopped it from being de-facto mandatory, and has no ch

This has been true since the beginning of HTML email. It hasn't stopped it from proliferating. It hasn't stopped it from being de-facto mandatory, and has no chance of reversing the course now. HTML is going to be inseparable part of e-mail for as long as e-mail lives, and yeah, it seems more likely than e-mail will die as a whole rather than get any simpler technically. At this point we can only get better at filtering the HTML.