Save in Sent Items
To have the system automatically save a copy of the generated message in the Sent Items folder of the user who generates the event,
select this option.
When you click Event Actions form, the application "wraps" the value of this check box within a SAVEMESSAGE( ) parameter, which yields this final syntax:
to return to theSAVEMESSAGE( booleanExpr
)
where booleanExpr is either TRUE or FALSE: