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Best Cloud Email Security 2026
Facts read 19 Sep 2026 – 15 Oct 2026
Cloud email security tools filter threats and help protect messages in hosted or self-managed mail systems. This guide helps buyers compare deployment, supported platforms, detection, remediation, data loss prevention and user limits.
The standings: top 10
| Name | In a line | Record score | Runs on | Facts read |
|---|---|---|---|---|
| 01 Microsoft Defender for Business | 5.6 | Android, iPhone & iPad, Windows, Mac | 9 Oct 2026 | |
| 02 SpamHero Business Email Security | It suits organizations wanting cloud email filtering, quarantine management, continuity, and Microsoft 365 or Google Workspace support. | 4.8 | Web, API | 4 Oct 2026 |
| 03 Mailprotector | Mailprotector is for managed service providers seeking email security products for client environments. | 4.7 | Web, API | 15 Oct 2026 |
| 04 Cisco Catalyst Center | 4.2 | Web, Windows, Mac, Linux | 3 Oct 2026 | |
| 05 Sophos Secure Message | Organizations seeking cloud email threat defense, encryption, data-loss prevention, and user-awareness capabilities. | 4.0 | Web | 8 Oct 2026 |
| 06 MailChannels Inbound Filtering | It suits hosting providers that operate email at scale and need filtering across multiple customer domains. | 3.7 | Web, API | 7 Oct 2026 |
| 07 Darktrace / EMAIL | It is intended for security teams protecting organizations against email and collaboration threats while reducing SOC investigations. | 3.6 | Web, API | 30 Sep 2026 |
| 08 Mailinblack Protect | Protect is aimed at companies, public administrations, and healthcare institutions seeking email threat filtering. | 3.6 | Web, API, Self-hosted | 30 Sep 2026 |
| 09 Barracuda Message Archiver | 2.7 | Web, Windows, Mac | 19 Sep 2026 | |
| 10 Check Point Email Security | 2.4 | Web | 7 Oct 2026 |
The page puts newer releases ahead of older ones and shows figures published by the makers. Use the comparison fields to check pricing, trial access, platform fit and security controls.
02
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
03
Mailprotector
Mailprotector is for managed service providers seeking email security products for client environments.
WebAPI Record4.7 Visit
04
Cisco Catalyst Center
WebWindowsMac+3 Record4.2 Visit
05
Sophos Secure Message
Organizations seeking cloud email threat defense, encryption, data-loss prevention, and user-awareness capabilities.
Web Record4.0 Visit
6
MailChannels Inbound Filtering
WebAPI — Record3.7 Visit It suits hosting providers that operate email at scale and need filtering across multiple customer domains.
7
Darktrace / EMAIL
WebAPI — Record3.6 Visit It is intended for security teams protecting organizations against email and collaboration threats while reducing SOC investigations.
8
Mailinblack Protect
WebAPISelf-hosted — Record3.6 Visit Protect is aimed at companies, public administrations, and healthcare institutions seeking email threat filtering.
Before you choose
Match the deployment model
Check whether a service runs on the web, through an API or as self-hosted software. Platform options listed here also include Windows, macOS and iOS.
MailChannels Inbound Filtering lists API and web access. Mailinblack Protect lists API, self-hosted and web deployment. Forcepoint Email Security Cloud lists web access.
Check plans and trial terms
Pricing models on this list are paid, with pricing available on request for the named products. Mailprotector lists a free plan.
Trial terms differ. Check Point Email Security and Hornetsecurity 365 Total Protection list 14-day trials, while Darktrace / EMAIL and Mimecast Email Security list 30-day trials.
Compare threat and data controls
Use the threat detection field to see how products describe email protection. Review post-delivery remediation for actions after a message reaches a mailbox.
Data loss prevention can matter when messages contain sensitive material. Compare that field with the email platforms a service supports before choosing.
Review user limits
Maximum users shows whether a product fits the intended account scope. Check this alongside deployment and supported platforms when planning a rollout.
Questions
Do these products offer a free plan?
Mailprotector lists a free plan. Other listed products may show paid pricing or pricing on request, so check the product entry for its plan details.
Which products list a free trial?
Check Point Email Security and Hornetsecurity 365 Total Protection list 14-day trials. Darktrace / EMAIL and Mimecast Email Security list 30-day trials.
What deployment options are listed?
Platforms listed across the category include web, API, Windows, macOS, self-hosted and iOS. Product entries identify the options they publish.
Can I compare post-delivery remediation?
Yes. Post-delivery remediation is one of the comparison fields. Review it with threat detection and data loss prevention when assessing controls.
How is pricing shown?
Products use a paid pricing model in the listed entries, with pricing on request noted for named products. Mailprotector also lists a free plan.
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