@anarchopunk_girl Fucking lmao, I would not have guessed "HTML emails are bad because of the rendering time" in a million years. They are bad for data, but it's because they're several times larger than text emails (even before you get to images) and they add up because free email services trained people to not delete their mail. (See "how do we politically determine what 90% is?")
HTML emails are bad for a lot of reasons. They're bad for privacy because of image tricks that act as read receipts, they increase the efficacy of phishing, they're security holes, they interfere with listserv stuff and contributed to that whole ecosystem becoming unviable as utilities/social media, they're worse for accessibility in every conceivable way, blah blah blah.