Google Code Blog: OAuth access to IMAP/SMTP in Gmail
This is great news for Gadget and Mashup developers. We will definetely have some sample Gadgets and Mashups in a near future release using the newly 'liberated' GMail :)
Google has long believed that users should be able to export their data and use it with whichever service they choose. For years, the Gmail service has supported standard API protocols like POP and IMAP at no extra cost to our users. These efforts are consistent with our broader data liberation efforts.
In addition to making it easier for users to export their data, we also enable them to authorize third party (non-Google developed) applications and websites to access their data at Google. One of the more common examples is allowing a social network to access your address book in order to send invitations to your friends.
This is great news for Gadget and Mashup developers. We will definetely have some sample Gadgets and Mashups in a near future release using the newly 'liberated' GMail :)