Joe Kissell, over at TidBits:
Mail is now at the point where it should have been when Mavericks was released.
[…] I’ll begin with the usual disclaimers: not every problem has disappeared, and what works for one person doesn’t necessarily work for everyone. Even so, this is the first version of Mail in Mavericks that feels reasonably reliable, and it’s about time!
I’ll say. Maybe Apple could fix a few longstanding and painful Safari bugs next.