Email security solutions help protect organizations from email-borne threats, such as malware, phishing, spam, and business email compromise (BEC). These tools typically use various techniques to scan emails for malicious content, block unwanted messages, and educate users about email security best practices.
The tool is not expensive and I would rate its pricing a four out of ten.
The pricing depends on the number of users; per how many mailboxes you have, but they're pretty negotiable with that, too.
The price of the licensing is based on the volume of email.