- Broadcom Symantec Email Security
Best for: Large companies needing cloud and on-premises mail
It makes the list because it offers both a cloud service and an on-premises Messaging Gateway, as a virtual or physical appliance, which suits large companies that still run their own mail servers. Browser isolation opens risky links away from the user's machine. If you plan to move mail to the cloud, ask how your policies carry over from the gateway to the cloud service.
From Best Email Security Solutions for Business, Fall 2026
- Proofpoint Core Email Protection
Best for: Large companies wanting deep email filtering
It earns a place because it goes past filtering into DLP, encryption, archiving and fraud defense from one vendor, which suits a large company that wants to run email security as one program. Archiving and supervision for SEC and FINRA rules matter if you work in financial services. Weigh which parts you really need, because the whole platform is a bigger commitment than a filter.
From Best Email Security Solutions for Business, Fall 2026
