New features for the Gmail Email Settings API and API improvements

The following new read functionality has been added to the Email Settings API:

read labels
read send-as
read forwarding email address
read imap settings
read pop settings
read email signature
read vacation-responder

Some additional changes have been made to API Authentication as well as improvements to API quotas, limits and tips for better error handling for Admin Settings API, Audit API, Calendar Resource API, Email Migration API, Email Settings API, Provisioning API, Reporting API.
For more information:
http://code.google.com/googleapps/domain/email_settings/developers_guide_protocol.html
http://code.google.com/googleapps/docs/