Stephen,
As far as i know, Veritas doesn't have a feature to send emails ... it depends external applications for example Blat is most famous and also Microsoft outlook.
I am sure it doesn't support in 4.5, 5.0 and 5.1 but not really sure about 6.0.
After the seeing the SMTP feature in BrightStor Arcserve i have requested Veritas to add this feature but not sure when we will get that. :)
Raghava.