OAuth access to IMAP/SMTP in Gmail- Google Developers Blog
Mar 30, 2010

Summary
This post announces the availability of OAuth access for IMAP and SMTP in Gmail, allowing third-party applications to securely access user email data. This marks an early step in providing programmatic access to Google services beyond basic authentication.
More from the Federated Login and Identity Management trail
- Enhance Security and Trust: New Session Metadata in Sign in with Google- Google Developers Blog
- Supporting Google Account username change in your app- Google Developers Blog
- Usability and safety updates to Google Auth Platform- Google Developers Blog
- Chrome on Android to support third-party autofill services natively- Google Developers Blog
- Federated Credential Management (FedCM) Migration for Google Identity Services- Google Developers Blog