Google provides client libraries for Gmail API for several languages, such as Java, JavaScript, .NET, Python, Objective-C, and PHP.

The new version of Gmail -- which was more of a back-end update -- has given developers access to an easy Greasemonkey API that makes developing plugins or changing the appearance of Gmail a breeze.

The new API offers fine-grained access to a Gmail user's account, allowing an app developer to make simple HTTPS calls and get responses in a variety of formats, with OAuth 2.0 authorizing access ...