You can a range of alerts and alert delivery mechanisms using NetBackup Operations Manager.  It's included with NBU and works across platforms and domains.  Yes, NOM does require a separate server, but you can run it in a virtual server (recommend Windows 2003).  We'll have more improvements to NOM with NBU 6.5.4 which will GA in mid June.

I followed the instructions for a set up on a windows server and it worked first time.

I then worked on the alerts to get that setup to email us on issues.

See my artical:
Lessons learned on NetBackup Operations Manger Alerts.
www-secure.symantec.com/connect/articles/lessons-learned-nom-alerts

So no we get emails on drive down failed jobs...........

I makes reports for the auditors so much easier too!.

yes you can install NOM on Virtual machine 2003 and you should use same backup network segment if not you get msg "partially online"