OAuth authentication for IMAP (via SASL): https://developers.google.com/google-apps/gmail/oauth_overview https://developers.google.com/google-apps/gmail/oauth_o

OAuth authentication for IMAP (via SASL): https://developers.google.com/google-apps/gmail/oauth_overview https://developers.google.com/google-apps/gmail/oauth_overvi... I don't know if there are many clients that support it yet, though.