If you manage multiple AdWords accounts using the Google Adwords My Client Center (MCC), two long-awaited features have just been added.

1) Email Notifications: You can now set which email alerts you want to receive for each of your client accounts in the MCC dashboard. Choose from alerts for billing issues, disapproved ads, campaign maintenance, and customized suggestions. Emails are sent to the Google account you use to sign in to the MCC.

2) Custom Alerts: Previously, these were only available at the individual account level. Now you can create them at the MCC level. You can create alerts that let you know when a campaign, ad group, or keyword has reached or exceeded a certain metric, or when any of those cross outside parameters you set. Just as with email notifications, your alerts are sent to your MCC login email address.

Link: Everything you need to know about creating and maintaining Custom Alerts.