public static function cp_mp_order_notification_subject($subject, $order)
 {
     if (cp_get_order_course_id($order->ID)) {
         return coursepress_get_mp_order_email_subject();
     } else {
         return $subject;
     }
 }
							<td>
								<input type="text" name="option_mp_order_from_email" value="<?php 
    echo esc_attr(coursepress_get_mp_order_from_email());
    ?>
"/>
							</td>
						</tr>

						<tr>
							<th><?php 
    _e('E-mail Subject', 'cp');
    ?>
</th>
							<td>
								<input type="text" name="option_mp_order_email_subject" value="<?php 
    echo esc_attr(coursepress_get_mp_order_email_subject());
    ?>
"/>
							</td>
						</tr>

						<tr>
							<th><?php 
    _e('E-mail Content', 'cp');
    ?>
</th>
							<td>
								<p class="description"><?php 
    _e('These codes will be replaced with actual data: CUSTOMER_NAME, BLOG_NAME, LOGIN_ADDRESS, COURSES_ADDRESS, WEBSITE_ADDRESS, COURSE_ADDRESS, ORDER_ID, ORDER_STATUS_URL', 'cp');
    ?>
</p>