Over the past 20 years, email has evolved from a tool used primarily by technical and research professionals to become the backbone of corporate communications. Each day, more than 100 billion corporate email messages are exchanged. As the level of use rises, security becomes a greater priority. Mass spam campaigns are no longer the only concern. Today, spam and malware are just part of a complex picture that includes inbound threats and outbound risks. Cisco® Email Security solutions defend mission-critical email systems with appliance, virtual, cloud, and hybrid solutions. The industry leader in email security solutions, Cisco delivers: Fast, comprehensive email protection that can block spam and threats before they even hit your network Flexible cloud, virtual, and physical deployment options to meet your ever-changing business needs Outbound message control through on-device data-loss prevention (DLP), email encryption, and optional integration with the RSA enterprise DLP solution One of the lowest total cost of ownership (TCO) email security solutions available Cisco's all-in-one solution offers simple, fast deployment, with few maintenance requirements, low latency, and low operating costs. Cisco's set-and-forget technology frees your staff after the automated policy settings go live. The solution then automatically forwards security updates to Cisco's cloud-based threat intelligence solution. This threat intelligence data is pulled by the Cisco Email Security Appliances (ESAs) every three to five minutes, providing you with industry-leading threat defense hours or days before other vendors. Flexible deployment options and smooth integration with your existing security infrastructure make Cisco Email Security an excellent fit for your business needs. Virtual Appliance The Cisco Email Security Virtual Appliance (ESAV) significantly lowers the cost of deploying email security, especially in highly distributed networks. The appliance lets your network manager create instances where and when they are needed, using your existing network infrastructure. The Cisco ESAV is a software version of the Cisco ESA and runs on top of a VMware ESXi hypervisor and Cisco Unified Computing System™ (Cisco UCS®) servers. You receive an unlimited license for the Cisco ESAV with the purchase of any of the Cisco Email Security software bundles. With the Cisco ESAV, you can respond instantly to increasing traffic growth with simplified capacity planning. You do not need to buy and ship appliances, so you can support new business opportunities without adding complexity to a data center or having to hire additional staff.