GFI doesn't offer that. That's their(I'd stupid) answer: Hi, Thank you for your feedback! I will forward your suggestion to the product manager for GFI MailEssentials. We cannot guarantee that your feature requests will be added to the next version, however your suggestion will be reviewed when we design the next version of our product. If the request has been made by many of our customers it will get serious consideration. If not, it is unlikely to be included in the next version. Thank you for your cooperation & understanding.