I think there is room for improvements on email clients, so more competition is nice!<p>Some other newcomers are:<p>- <a href="http://mailplaneapp.com/" rel="nofollow">http://mailplaneapp.com/</a><p>- <a href="http://www.postbox-inc.com/" rel="nofollow">http://www.postbox-inc.com/</a><p>- <a href="http://inky.com/" rel="nofollow">http://inky.com/</a><p>Unfortunately, Mailbox FAQ question 'Does Mailbox store my emails on its servers?' => 'Yes, but...' is a deal-breaker for me (sadly).<p>It's still nice to see the innovation though.
Nice, shame they don't support non-gmail yet. Although the UI looks just like Fastmail with the minimalist web theme selected, which I highly recommend if you're not comfortable using GMail. I find it superior to GMails web UI in many ways.
It is really a shame, because the only native e-mail client that I actually used and loved was Sparrow. Then they got acquired and shattered my hopes and dreams. Now it is just Gmail web.