Name: Kiwi for Gmail
Mac Platform: Intel
OS version: 10.9 or later
Processor type(s) & speed: 64-bit
App Store: https://itunes.apple.com/us/app/kiwi-for-gmail/id986304488?ls=1&mt=12
More Info: http://kiwiforgmail.com/index.php
Kiwi for Gmail (formerly Gmail for Mac) turns Gmail into a full-powered desktop email client. No one wants to use Gmail in the browser on their phone, and we felt they shouldn't have to on the Mac either. 2 years in the making from a seasoned team with Apple, Bose, and iRobot experience. Like Gmail's own apps on iOS, Kiwi for Gmail is a sophisticated email client-browser hybrid that gives you the full power of Gmail within a polished desktop experience.
Kiwi for Gmail is the only app that supports every Gmail feature, every detail, and with a technical foundation that is rebuilt from the ground up to make Gmail faster, easier to use, and more reliable in our app than in any browser. We've thoroughly integrated Gmail into the desktop experience in a way that simply is impossible in the browser. What results is the most seamless email experience you've ever seen.