I feel pretty much like you do. I use Mailmate and I think it's the best email client you can get. The search feature alone is worth the price of admission. He's got a 30 day free trial so give it a shot.
I all ready have the beta, but the same way I never got used to the iOS app I'm unable to get used to this one as well. I don't really like the whole "get done with your emails" thing and the "we use our own tag system instead of googles"
Sadly I think the superior mail client for the Mac is sparrow and I've been mad at Google a long time for buying the programmers and shutting it down. They should have brought it into google and continued to make it since they don't have their own client for Mac. It's by far the best Google client I have used. But I know it will end some day and the design all ready start to look stale when I upgrade to Yosemite... If it even works at all.
I would love to hear what people use.
Apples own mail client, how does that one work with multiple gmail accounts and also with contacts. I have no interest in merging all my gmail contacts with my phone book, will mail then be able to autocomplete addresses? And can I search through all my google emails without downloading all my emails?
Also would love if someone could elaborate on what exactly makes mailbox a more convenient way to read emails than sparrow.
Any input is appreciated!
Ps! Recently saw this sparrow for Yosemite. I can only wish that would happen, but sadly no
https://dribbble.com/shots/1589167-Sparrow-Yosemite