Mac Platform: Intel
OS version: 10.7 or higher
Embedded Images - Provides similar download functionality for embedded images as Mailplane already does for normal attachments.
Hide Ads in Promotions Tab - "Preferences... > Style > Hide Ads" does also hide ads in Gmails Promotions Tab.
Hide Right-Hand Column - "Hide Ads" (Preferences... > Style) just hides Ads. Disabling "Hide Right-Hand Column" will still hide Ads but the right-hand column (People information, Streak's Boxes, etc.) will remain visible.
Fixes and Improvements
Don't ask 2-step verification code again if "Trust this computer" has been selected
"Download As..." doesn't change the default download folder anymore
Courtesy of C.O.R.E
Mailplane brings Gmail to your Mac desktop. Mailplane combines Gmail's spam protection, endless storage, global access, and unique user interface with great Mac features:
Attach files: Drag 'n' drop your files and folders to Mailplane and watch them being attached to the message and automatically uploaded.
Send optimized photos: Pictures get automatically resized and optimized to reduce the size of your message.
Instantly send screenshots: Need to send a Screenshot? With one click you grab a portion of your screen and attach it to your message.
Send pictures from iPhoto: Mailplane comes with an iPhoto plugin that makes sending picture attachments so easy: select any pictures in iPhoto and then press the email button. That's it.
More info: http://mailplaneapp.com