If you use Plesk control panel to create CRON jobs and don’t want results to be sent to you by email, in Command field add ” > /dev/null”. For example:
php cron/my_script.php > /dev/null/
This will not send you result, bt will send email if there were some errors. If you don’t wan’t to get any errors just add ” > /dev/null 2>&1″. For example
php cron/my_script.php > /dev/null 2>&1