Official Google Mobile Blog: Gmail gets a new engine for iPhone and Android-powered devices

Today, we’re thrilled to tell you about the improvements we’ve made to Gmail for mobile, running in the iPhone and Android web browser. First, you’ll notice that it’s a lot faster when performing actions like opening an email, navigating, or searching. And if the data network drops out on you, rest assured that Gmail won’t. You’ll still be able to open recently read messages and to compose over a flaky, or non-existent, network connection. All this is achieved with aggressive caching and by leveraging new browser technologies, like HTML5 and Gears. The full impact of this new architecture isn’t visible yet, but it will enable us to significantly improve performance and quickly roll out new features in the near future. We’re really excited about the potential impact this change can bring - so excited, in fact, that our VP of Engineering, Vic Gundotra, shared the news and demoed these new capabilities at the February 2009 GSMA Mobile World Congress event in Barcelona and last week at Web 2.0 in San Francisco.