An avid Mac developer has unveiled Mailplane for Mac OS X, a new Cocoa shareware application that integrates Gmail into the Mac desktop. Mailplane supports drag-and-drop file attachments, and automatically resizes photos when composing messages. The software features iPhoto integration, as well as Growl notifications. Mailplane is still in beta, and the developer is looking for testers to sign up for private beta registration. Pricing is still undetermined, and the application requires Mac OS X 10.4 or later.