Syntax of if exists in IBM Db2

The way i did it is as follows

Begin atomic

  if( exists( SELECT 1 
              FROM SYSIBM.SYSTABLES 
              WHERE NAME='EMAIL' AND TYPE='T' AND creator = 'schema1' 
            )
    ) 
    then customStoredproc('drop table EMAIL'); 

  end if;

End

My customStoredProc just has one stmt execute immediate @dynsql;