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Best Secure Email Gateway Software in 2026
- 18 apps
- Research read 28 Sept 2026
- How the order is worked out
- 1
Cloudflare Gateway
Free plan AndroidAPIiPhone+4 - 2
Kerio Connect
Free trial AndroidAPIiPhone+5Kerio Connect provides a broad mail and collaboration server with flexible deployment and migration options. Licensing and optional components should be reviewed alongside the requested mailbox count.
- 3
- 4
Libraesva Email Security
Free trial Self-hostedWebLibraesva Email Security combines message, attachment, URL, and account-takeover protections with both self-hosted and web options. Buyers need to request pricing, while a 30-day trial is available.
- 5
Mailinblack Protect
Paid APISelf-hostedWebMailinblack Protect combines inbound email filtering with link analysis and administrative controls, with deployment choices for different environments.
- 6
SpamHero Business Email Security
Free trial APIWebSpamHero combines inbound filtering, quarantine, and email continuity with Microsoft 365 and Google Workspace support.
- 7
SpamTitan Gateway
Free trial Self-hostedWebSpamTitan Gateway combines mail-flow administration with spam analysis, antivirus engines, and outbound controls.
- 8
Sophos Secure Message
by Sophos Secure MessageFree trial WebChoose Sophos Email if your organization needs inbox threat protection alongside email encryption and data loss prevention.
- 9
Symantec IT Management Suite
Paid APILinuxMac+3Choose Symantec IT Management Suite if you need cloud-based management across Windows, macOS, and Linux with patching, deployment, and security controls.
- 10
Barracuda Message Archiver
Paid MacWebWindows - 11
- 12
Hornetsecurity 365 Total Protection
Paid Web - 13
Proxmox Mail Gateway
Paid LinuxWebProxmox Mail Gateway combines outbound filtering with a consistent stated feature set across four annual support tiers. The key choice is the level of support and response time required.
- 14
Forcepoint Email Security Cloud
Paid Web - 15
FortiMail Email Security
PaidFortiMail combines outbound filtering, impersonation protection, and malware sandboxing in a hybrid email security product.
- 16
MDaemon SecurityGateway
Paid WebWindows - 17
Mimecast Email Security
Paid Web - 18
Trend Vision One Container Security
Paid Web
#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price
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