Why do I keep getting email notifications from Webmaster Tools in my inbox?
If you are receiving Bing Webmaster Tools Issue Notifications from Bing Webmaster Tools then this means that there are unread messages in your Message Center and you have set up your Email Preferences to receive notifications to your email inbox. The notifications alert you about both new and unread messages.
To change your email settings simply log into Bing Webmaster Tools and change your preferences by clicking on the PROFILE link at the top of the page. If you still want to receive notifications of future issues, simply read, archive, or deleted previously unread messages in your Message Center to only receive new message notifications in the future.