Mailplane brings Gmail (Google Mail) to your Mac desktop.
It combines great Gmail features like Google Search, conversations, spam protection, and the unique Gmail interface with the power of your Mac: send pictures from iPhoto; create attachment by "drag and drop"; use multiple accounts; get powerful new mail notifications; and much more.
For more information check the home page, FAQ page, Support page, or watch the screencasts
Are looking for "Offline Gmail" with Mailplane?
Visit beta download page, it contains the latest beta version, the installation screencast, and known issues.