Conversations that stay together
Replies are grouped with the mail they answer, the careful way Apple Mail does it.
A reply joins a conversation only when it really answers a message in it and the subject still matches. Two different mails that happen to share a subject stay apart.
Prefer every message on its own line? Conversation view is one switch in the quick settings, and it follows you to every browser.
- Long quoted text folded away behind a small button
- Conversation view on or off, saved for you, not per browser