From QuickBuild v5, all alerts reported by the QuickBuild system can be viewed in Grid tab like below and all alerts can be subscribed by email, tray monitor, Jabber and MSN messenger.
You can filter the alerts by different source, priority and definition. You can define your own alerts by adding some condition set in alert plugin setting page. See Configuring System Alerts for more details.
You may also subscribe the alerts via email, tray monitor, Jabber client and MSN messenger, see how to subscribe system alerts.
Below are screen shots for tray monitor alerts and email alerts