Screen readers should be able to deal with HTML-only mails for the most part, otherwise you should send the sender of that mail a reminder about those laws.
Are you actually a user of accessibility? To me, it doesn't feel like you are. If I am right, please refrain from patronizing people who actually do. In my book, you have no idea how horrible the situation has become over the last 5 to 10 years. Accessibility used to be a thing, yes. These days, it is mostly a happy accident.
I've never talked to anyone who actually used accessibility tools. I'm aware of the W3C standards. Are there any other resources that developers can use to produce stuff that works well with real-world accessibility software?
