In our 25-criterion evaluation of enterprise email security providers, we identified the 15 most significant ones — Agari, Area 1 Security, Barracuda Networks, Broadcom Symantec, Cisco, Forcepoint, Fortinet, Google, Microsoft, Mimecast, Proofpoint, SonicWall, Sophos, Trend Micro, and Zix — and researched, analyzed, and scored them. This report shows how each provider measures up and helps security and risk professionals select the right one for their needs.