New Message Center notifications for detecting an increase in Crawl Errors

When Googlebot crawls your site, it’s expected that most URLs will return a 200 response code, some a 404 response, some will be disallowed by robots.txt, etc. Whenever we’re unable to reach your content, it shows you Crawl errors section of Webmaster Tools (even though it might be intentional and not actually an error). C

It shows Message inbox

like:

You can use the email forwarding feature to receive these alerts in your inbox.

For More information go to http://googlewebmastercentral.blogspot.com/