luos/workflow/engine/methods/setup/emailSystemCron.php

<?php
/**
 * emailSystemCron.php
 *
 * ProcessMaker Open Source Edition
 * Copyright (C) 2004 - 2008 Colosa Inc.23
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 * For more information, contact Colosa Inc, 2566 Le Jeune Rd.,
 * Coral Gables, FL, 33134, USA, or email info@colosa.com.
 */
$G_MAIN_MENU = 'processmaker';
$G_SUB_MENU = 'setup';
$G_ID_MENU_SELECTED = 'SETUP';
$G_ID_SUB_MENU_SELECTED = 'MAILSYSTEM';

$run = new spoolRun();
unset( $run );

$Fields['MESSAGE'] = 'Hello world, this is my first email ... ';

$G_PUBLISH = new Publisher();
$G_PUBLISH->AddContent( 'xmlform', 'xmlform', 'login/showMessage', '', $Fields, '' );
G::RenderPage( 'publish' );