This is a Ruby library created for wrapping the Gmail API. This unofficial library provides access to all essential Gmail functionality like: searching, archive, delete, read/unread flagging, and reading and sending emails. Hosted on GitHub, the library documentation includes installation instructions as well as extensive code examples.
Fifteen APIs have been added to the ProgrammableWeb directory in categories including email, Telephony, and Fitness. Highlights today include APIs for Google Fit fitness applications and an API for promoting efficient app energy usage. Here's a rundown of the latest additions.
Additional third party integration with Gmail has been possible (you only have to look at all the contact import features from sites like Facebook), but these have either been clunky manual procedures that involve exporting contacts to a CVS file, or they require you to supply your email password. Neither option is all that attractive. Now there is an alternative. Google have recently added the ability to access the IMAP/SMTP features of particular Gmail account using OAuth.