Mailing list emails end up full of markup, but the people who send them tend to be very consistent—always quoting previous messages, always posting new text at

Mailing list emails end up full of markup, but the people who send them tend to be very consistent—always quoting previous messages, always posting new text at the bottom (instead of the top, which is default email client behavior these days). Email apps can apply some formatting to make them easier to read, too, for this same reason. So while they often get overly-full of markup like these ones, the markup follows a pattern that's rarely broken, and it becomes very easy to follow after you've gotten through a few threads.