System Log
Important user activity and automated processes
such as subscription expiry checks and the mailer are
logged so you can monitor and check things are
running as they should be.
User Logs
In addition to the main system log each user also has
their own activity log which you can view by clicking
on the users name and click the log link. This is useful
for example to check what emails have been sent
through the cms to a particular user.
CMS Help - Advanced - System Log