18.3
Cloudflare Gateway is a web and network filtering service with controls for blocking content and managing how users reach online resources.
Free planAndroidiOSWeb
Best Secure Email Gateway Software in 2026
Secure email gateway tools handle messages and apply controls before mail arrives in your inbox. Listings may support web, API, Windows, macOS, Linux or self-hosted operation, along with protection, continuity and archiving features. Review deployment choices together with malware sandboxing, outbound data-loss prevention, email encryption, continuity spooling and archiving. If mobile access matters, see whether…
27.5
AndroidiOSAPI
36.8
Symantec IT Management Suite manages, patches, and remediates application and operating system configurations across desktops, laptops, and servers…
WebAPILinux
- 4
Kerio Connect
AndroidiOSWebAPI6.6 - 5
SpamHero Business Email Security
SpamHero Business Email Security filters a domain’s incoming email in the cloud and forwards clean messages to the customer’s mail server.
WebAPI6.5From $5 a month - 6
Sophos Secure Message
Sophos Secure Message is part of Sophos Email, a cloud service that protects inboxes from phishing, business email compromise, spam, and email-delivered malware.
Web6.2 - 7
Libraesva Email Security
Libraesva Email Security provides layered, AI-driven protection against email threats for organizations.
WebSelf-hosted5.8 - 8
Proxmox Mail Gateway
Proxmox Mail Gateway is an open-source email gateway for Linux and the web, deployed in a gateway role with outbound filtering.
WebLinux5.8From €190 a year - 9
SpamTitan Gateway
SpamTitan Gateway is an anti-spam appliance for administrators who need to control mail flow and protect networks from unwanted email and malware.
WebSelf-hosted5.8 - 10
Mailinblack Protect
Mailinblack Protect is an email-security solution for companies, public administrations, and healthcare institutions.
WebAPISelf-hosted5.6 - 11
Barracuda Message Archiver
WebmacOSWindows5.3 - 125.1
- 135.1
- 14
4.9 - 154.9
- 16
4.8 - 17
MDaemon SecurityGateway
WebWindows4.7 - 18
4.5
Choosing well
Match the deployment
Select a setup that fits your mail system, such as web, API, Windows, macOS, Linux or self-hosted. Mailinblack Protect lists API, self-hosted and web platforms; Forcepoint Email Security Cloud lists web.
If staff need phone access, verify Android support separately; the platform facts here do not specify an Android app.
Compare protection controls
The comparison fields show whether listings include malware sandboxing, outbound DLP and email encryption. Each addresses a different risk, so align the controls with the mail your organisation handles.
When an interruption occurs, continuity spooling may keep delivery moving. Treat email archiving separately if you need to retain and retrieve messages.
Check plans and trials
Look for a free plan when you want to evaluate without a licence commitment. Cloudflare Gateway offers a free plan, with paid service starting at $7 per user each month.
Published paid prices differ: MDaemon SecurityGateway starts at $0.20 per user each month, whereas Barracuda Message Archiver and FortiMail show pricing on request.
Use the trial window
A trial can help you check policy setup, mail routing and administration before committing. Check Point Email Security, Hornetsecurity 365 Total Protection and other listings specify trial periods, including 14-day and 30-day options.
Confirm what the trial includes and whether the deployment model suits your environment before selecting a paid plan.
Questions people ask
Do these gateways have Android apps?
The category facts list web, API, Windows, macOS, Linux and self-hosted platforms, but do not specify Android support. Check the product page for an Android app or mobile web access.
Can I find a free plan?
A free plan is available from listings in this category. Cloudflare Gateway is an example with a free plan; confirm included controls and limits before relying on it.
Which products offer trials?
Trial lengths differ: Check Point Email Security and Hornetsecurity 365 Total Protection specify 14 days, while Kerio Connect, Libraesva and Mimecast specify 30 days.
What does pricing on request mean?
The maker does not publish a price on the listing. Contact the vendor for a quote and ask how deployment, users and required protection controls affect it.
What is continuity spooling?
This comparison field refers to holding mail so delivery can proceed during an interruption. Check the product details to see whether the gateway provides it.