The Barracuda Email Security Gateway is an email security gateway that manages and filters all inbound and outbound email traffic to protect organizations from email-borne threats and data leaks. As a complete email management solution, the Barracuda Email Security Gateway lets organizations encrypt messages and leverage the cloud to spool email if mail servers become unavailable. The Barracuda Email Security Gateway available as physical or virtual appliance or in a public cloud environment (Amazon Web Services (AWS), or Microsoft Azure).