There are 5,000 or more possible events that can show up in Syslog.
Of them there are something like 165 or so that AutoSupport is tied into. The list of AutoSupport events or triggers can be found under:
http://now.netapp.com/NOW/knowledge/docs/olio/autosupport/matrices.
For these events, AutoSupport and short "noteto" email messages can be configured in Data ONTAP using the "options autosupport.*" interface in 7G or 7-mode or the "system autosupport modify" interface in Cluster-mode.
Another option as mentioned is to modify notifications by using the NetApp "My AutoSupport" service.
Event Messages (EMS) such as "wafl.vol.full" and "scsitarget.lun.noSpace" can be in the 4,000+ events that are not tied into AutoSupport. For these events, one can use the "event" commands in Cluster-mode such as "event config modify" to cause email and other notifications to happen.