The Barracuda Spam Firewall is compatible with all email servers and can fit into nearly any corporate or small business environment. It is used by small organizations with as few as 10 employees and large organizations with as many as 200,000 employees. A single Barracuda Spam Firewall handles up to 25,000 active email users and 15 million email messages per day. Multiple units can be clustered together for even greater capacity and high availability.

It manages all inbound and outbound email traffic to protect organizations from email-borne threats and data leaks. As a complete email management solution, organizations can encrypt messages and leverage the cloud to spool email if mail servers become unavailable.