I've been trying FastMail for the past two months or so and have been very impressed; it's actually better than GMail in many ways. Most importantly to me, it seems to be quite a bit faster than GMail for me. One problem I've had is with their spam filtering. I've marked everything spammy as Spam (some 800 messages so far), but I can't figure out how to get things marked as non-spam (so that the personal database get…
I am skeptical of performance claims especially by people (not referring to you, but to the author of the post) who think mail.app is fast. Mail.app needs several seconds to do things that gmail does in 50 milliseconds, like load a thread with 100 posts, or free text search.