收到google的邮件,请问这是怎么回事

收到google的邮件,请问这是怎么回事
Dear Webmaster Tools user,We know that having a healthy and well-performing website is important to you.To keep you informed about your site's status Webmaster Tools will now automatically send you a notification email if there are critical or important issues that we detect with your site.We'll only send you email for issues that we think have significant impact on your site's health or search performance which have clear actions that you can take to address.For example,we'll email you if we detect malware on your site or see a significant increase in errors while crawling your site.For most sites these kinds of issues will occur rarely.If your site does happen to have an issue we cap the number of emails we send over a certain period of time to avoid flooding your inbox.If you don't want to receive any email from Webmaster Tools you can change your email delivery preferences at 我收到google的邮件,这个邮件说明我网站出现了问题了吗