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Best Secure Email Gateway Software 2026
Facts read 19 Sep 2026 – 21 Oct 2026
Secure email gateway software gives organizations a way to compare email protection controls, deployment choices and pricing models. Buyers can use the entries to assess inbound and outbound mail features, including sandboxing for malware, outbound DLP, encryption, continuity spooling and archiving.
The standings: top 10
| Name | Record score | Try it free | Runs on | Facts read |
|---|---|---|---|---|
| 01 Cloudflare Gateway | 6.3 | Free plan | Android, iPhone & iPad, Web, Windows | 14 Oct 2026 |
| 02 Microsoft Defender for Business | 5.6 | Free trial | Android, iPhone & iPad, Windows, Mac | 9 Oct 2026 |
| 03 Kerio Connect | 4.9 | Free trial | Android, iPhone & iPad, Web, Windows | 8 Oct 2026 |
| 04 SpamHero Business Email Security | 4.8 | Free trial | Web, API | 4 Oct 2026 |
| 05 Symantec IT Management Suite | 4.2 | — | Web, Windows, Mac, Linux | 21 Oct 2026 |
| 06 Sophos Secure Message | 4.0 | Free trial | Web | 8 Oct 2026 |
| 07 Libraesva Email Security | 3.9 | Free trial | Web, Self-hosted | 29 Sep 2026 |
| 08 SpamTitan Gateway | 3.9 | Free trial | Web, Self-hosted | 29 Sep 2026 |
| 09 Mailinblack Protect | 3.6 | — | Web, API, Self-hosted | 30 Sep 2026 |
| 10 Proxmox Mail Gateway | 3.5 | — | Web, Linux | 4 Oct 2026 |
The list is ordered by newest releases first. It uses figures published by the makers and applies no score. Assess plan access, trial duration, starting prices and support for web, API, Windows, macOS, self-hosted and Linux deployments.
02
Microsoft Defender for Business
AndroidiPhone & iPadWindows+2 Record5.6 Visit
03
Kerio Connect
AndroidiPhone & iPadWeb+5 Record4.9 Visit
04
SpamHero Business Email Security
It suits organizations wanting cloud email filtering, quarantine management, continuity, and Microsoft 365 or Google Workspace support.
WebAPI Record4.8 Visit
05
Symantec IT Management Suite
It is aimed at IT teams managing endpoint and server deployment, patching, assets, and policies across complex environments.
WebWindowsMac+3 Record4.2 Visit
6
Sophos Secure Message
Web — Record4.0 Visit Organizations seeking cloud email threat defense, encryption, data-loss prevention, and user-awareness capabilities.
9
Mailinblack Protect
WebAPISelf-hosted — Record3.6 Visit Protect is aimed at companies, public administrations, and healthcare institutions seeking email threat filtering.
Before you choose
Compare protection controls
Check whether an offering provides malware sandboxing, outbound DLP, email encryption, continuity spooling or email archiving. Each control applies to a different email-handling need, so align the selection with your requirements.
The comparison fields show where products publish information about these capabilities. Product details indicate which controls are available.
Check deployment options
Products in this category are available through web, API, Windows, macOS, self-hosted and Linux environments. Select an approach your organization can support.
Mailinblack Protect lists API, self-hosted and web support. Forcepoint Email Security Cloud identifies web as its platform.
Review free access
Some entries include a free plan, whereas others use paid plans. Selected products also provide trial periods.
Cloudflare Gateway includes a free plan and paid service from $7 per user per month. Check Point Email Security lists a 14-day trial, while Kerio Connect lists a 30-day trial.
Understand paid pricing
Vendors may show an entry price or ask buyers to request a quote. MDaemon SecurityGateway lists a 30-day trial with pricing starting at $0.20 per user per month.
Barracuda Message Archiver, FortiMail Email Security and Mimecast Email Security list pricing on request. Compare the published pricing note with your deployment choice.
Questions
Do products on this list offer free plans?
Cloudflare Gateway is listed with a free plan; the remaining entries show paid pricing or pricing on request.
Can I try secure email gateway software before paying?
Trial periods vary. Check Point Email Security lists 14 days, while Kerio Connect, Libraesva Email Security, MDaemon SecurityGateway and Mimecast Email Security list 30 days.
Which platforms can these tools run on?
The listed deployment environments span web, API, Windows, macOS, self-hosted and Linux. Product entries specify their supported deployment options.
Is pricing published for these products?
Paid service for Cloudflare Gateway starts at $7 per user per month, while MDaemon SecurityGateway starts at $0.20 per user per month; other entries provide pricing on request.
What capabilities can I compare?
Comparison fields cover free-plan availability, starting paid price, deployment, malware sandboxing, outbound DLP, email encryption, continuity spooling and email archiving.
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