[jhgb]

> An "actual mail client" is any mail client that speaks This "use a real X" or "real programmers always do X this way" stuff is why many tech communities are considered hostile and toxic, especially to newcomers. It's childish in personal settings and unprofessional in work settings.

Isn't it perfectly justified in "use the right tool for a job" situations? If someone tells me not to hammer nails in with a pair of pliers, I'd hardly consider it "unprofessional" or "childish". If tool A requires you to use tool B for interoperability, I would imagine a reasonable person would simply use tool B, and not complain about people being "hostile" or "toxic" for suggesting to do so.