Customizing the MAIL_ON_ABEND section of jobmanrc

You can modify the wording used in the message sent to the users specified in the MAIL_ON_ABEND field of the TWS_home/jobmanrc configuration file by accessing that file and changing the wording in the parts highlighted in bold:
# Mail a message to user or to root if the job fails.

if [ "$MAIL_ON_ABEND" = "YES" ]
then
  if [ $UNISON_RETURN -ne 0 ]
  then
  mail $LOGNAME <<-!
        $UNISON_JOB
        \'$UNISON_JCL\' failed with $UNISON_RETURN
        Please review $UNISON_STDLIST
!
  fi
elif [ "$MAIL_ON_ABEND" = "ROOT" ]
then
  if [ $UNISON_RETURN -ne 0 ]
  then
  mail root <<-!
        $UNISON_JOB
        \'$UNISON_JCL\' failed with $UNISON_RETURN
        Please review $UNISON_STDLIST
!
  fi
elif [ "$MAIL_ON_ABEND" != "NO" ]
then
  if [ $UNISON_RETURN -ne 0 ]
  then
  mail $MAIL_ON_ABEND <<-!
        $UNISON_JOB
        \'$UNISON_JCL\' failed with $UNISON_RETURN
        Please review $UNISON_STDLIST
!
  fi
fi