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

Designed to let you easily deliver Gmail-enabled features, this new API is a standard Google API, which gives RESTful access to a user’s mailbox under OAuth 2.0 authorization.

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 ...

Google has updated the Gmail API with new endpoints for managing settings. The additions cover filters, forwarding addresses, auto-forwarding, IMAP/POP settings, send-as aliases, signatures, and ...

The Gmail API lets you ask Google for threads, messages, drafts, and labels three to ten times faster than with IMAP, Google says — but, the company says that it shouldn’t be used to replace IMAP.