Google has launched a new API in its message center called GData API that allows Google to communicate with webmasters on site issues.

Webmasters can use GData to access feeds from the Google Message Center without having to continually check your messages in Webmaster tools

The Message Center GData API allows webmasters to retrieve all messages, mark them as read or unread, and delete messages.

The Google Webmaster Central Blog provides more details.

Retrieve messages: The messages feed contains all the messages sent to your account. These messages have important information about your verified sites. Examples of messages include infinite spaces warnings and crawl rate change notifications.

Mark messages as read or unread: In order to keep track of new communications from Google, you can mark your messages as read or unread, the same way that you would manage your inbox. If you retrieve a single message, this message will be automatically marked as read.

Delete messages: It’s possible to delete messages using the GData API. However, be careful because if you delete a message through the API it will also be deleted in your Webmaster Tools account, as both interfaces share the same data.

For more information visit the GData website. The homepage of the Webmaster Tools GData API has a section on message feeds, and details about protocol.