I can't for the life of me understand why people think it's OK to send and even expect plaintext email in 2026. There's so much content that requires formatting and non-Unicode support in order to make sense. Formatted text, lists, in-line graphs or images, tables, equations or other mathematical formulae, all of these benefit from a controlled layout that plaintext just doesn't offer or can barely approximate. Why would you limit your email communication like this?