Public Interface IAlertNotifyHandler
Dim instance As IAlertNotifyHandler
public interface IAlertNotifyHandler
This interface gives an ability to customize alert content (subject, body etc)
Click here for implementation example.
http://blogs.msdn.com/sharepointdeveloperdocs/archive/2007/12/14/how-to-customizing-alert-emails-using-ialertnotificationhandler.aspx
http://support.microsoft.com/default.aspx?scid=kb;en-us;948321&sd=rss&spid=11373