Mimecast

Mimecast provides an always-on, cloud-based email security solution that reduces the complexity of protecting your organization from malware, spam and data leakage. Our service delivers robust 100% anti-virus and 99% anti-spam service levels, with 0.0001% spam false positives. An advanced mail transfer agent (MTA) acts as your email bridgehead in the cloud, stopping known and emerging email borne threats before they reach your network.