Hello Ronni,
The Security Appliance will send email notifications due to any events you have configured based on a logging level or a logging list you have configured.
Here is one document I used before to know a little bit more about the email notifications feature.
http://community.spiceworks.com/how_to/show/388
Other way you can send the logging messages is using a logging class.
For example lets say you just want to send events related to failover and webvpn.
logging class ha mail 7
logging class webvpn mail 7
Hope this helps, any other question let me know.
Do please rate helpful posts.
Julio
Julio Carvajal
Senior Network Security and Core Specialist
CCIE #42930, 2xCCNP, JNCIP-SEC