This is absolutely the ultimate guide to Hacking Google's wildly popular Gmail service. Written by web programming expert, and popular blogger Ben Hammersley.
This is serious, down and dirty, under the hood code level hacking - blowing away the default settings, customizing appearance, disabling advertising, and offering readers total control over their Gmail account like never before. Readers will discover and use 3rd party tools that enable them to use their Gmail storage like a hard drive for backing up important files, or photos and music, or even use Gmail as a blogging tool.

    Programmers and scripters will have a field day creating and using a Gmail API with a variety of languages to creating their own hacks and tools for Gmail.

Part 1: Strating to Use Gmail
Part 2:Getting Inside Gmail
Part 3:Conquering Gmail
etc.