Protection against viruses, keeping hackers at bay is one if the most important features which creates a great protection firewall also increases efficiency by saving time as there's no more requirements of going through numerous mails.

Anti - spam filters which allows you to keep all the spam mail saved for a few days has another advantage as it ensures no prime mail is being deleted. Review collected by and hosted on G2.com.

The processing can take a lot of time in case of very large compound files and mail boxes. And it is slightly expensive than options available in the market. Review collected by and hosted on G2.com.