Security & Privacy·Standings

Compare Cloud Email Security Software

Cloud email security tools filter threats in email; compare threat detection and how well a tool fits your email platform and deployment needs.

The board uses a signal score out of 10 and marks public API, open-source code, and a free tier. Compare free plans and trials, remediation after delivery, data loss prevention, and maximum users too.

  • 19 platforms
  • 3 with a public API on this page
  • 1 with a free tier
  • Checked 28 Sept 2026
  1. 1
    M
    Mailprotectormailprotector.com

    An email security suite for managed providers, with an API-connected gateway for Microsoft 365.

    6.3 APIOpenFree Free tier
  2. 2
    MD
    Microsoft Defender for Businessmicrosoft.com

    A paid security service for business devices, starting at $3 per user monthly.

    6.2 APIOpenFree —
  3. 3
    SS
    Sophos Secure Messagesophos.com

    An email service that lets recipients open secure messages with a password.

    5.6 APIOpenFree —
  4. 4
    SB
    SpamHero Business Email Securityspamhero.com

    A cloud email filter that forwards spam- and malware-screened messages to your mail server.

    5.5 APIOpenFree From $5/mo
  5. 5
    H3
    Hornetsecurity 365 Total Protectionhornetsecurity.com

    A Microsoft 365 suite with spam and phishing filters, archiving, encryption, and backup.

    5.3 APIOpenFree —
  6. 6
    CC
    Cisco Catalyst Centercisco.com

    A network management dashboard for discovery, configuration checks, and performance monitoring.

    5.3 APIOpenFree —
  7. 7
    MI
    MailChannels Inbound Filteringmailchannels.com

    Filters inbound email for hosting providers to block spam, phishing, and malware before messages reach hosted inboxes.

    5.2 APIOpenFree —
  8. 8
    DE
    Darktrace / EMAILdarktrace.com

    An email tool that flags unusual activity and can quarantine suspicious messages.

    4.9 APIOpenFree —
  9. 9
    MP
    Mailinblack Protectmailinblack.com

    An email security service that filters spam, malware, phishing, and suspicious links.

    4.9 APIOpenFree —
  10. 10
    ME
    4.8 APIOpenFree —
  11. 11
    BM
    Barracuda Message Archiverbarracuda.com

    An email archiver with legal hold, eDiscovery tools, and journal capture.

    4.4 APIOpenFree —
  12. 12
    CP
    Check Point Email SecurityCheck Point Software Technologies Ltd.

    An email tool that filters outgoing messages and guards against impersonation.

    4.1 APIOpenFree —
  13. 13
    CE
    4.1 APIOpenFree —
  14. 14
    OC
    OpenText Core Email Threat Protectioncybersecurity.opentext.com

    An email gateway for Microsoft 365 that detects threats and removes messages after delivery.

    4.1 APIOpenFree —
  15. 15
    FE
    Forcepoint Email Security Cloudforcepoint.com

    A cloud email tool that checks messages and attachments for common threats.

    4.0 APIOpenFree —
  16. 16
    PP
    Perception Point Advanced Email Securityfortinet.com

    A cloud email security service with outbound filtering and impersonation protection.

    4.0 APIOpenFree —
  17. 17
    SE
    Symantec Email Security.cloudbroadcom.com

    A cloud email security service with outbound filtering and malware sandboxing.

    4.0 APIOpenFree —
  18. 18
    TE
    Trustifi Email Securitytrustifi.com

    An email security service with threat removal after delivery and data loss prevention.

    4.0 APIOpenFree —
  19. 19
    VE
    VIPRE Email Securityvipre.com

    An email gateway that detects fraud, social engineering, and malicious links or attachments.

    4.0 APIOpenFree —

Places #1, #2, #3, #4, #5 on this board are open to sponsors. Take #1 · Other ways to advertise

How to choose

Which email platforms does it support?

Check that the tool works with your email platform before comparing other features. The board compares email platforms and lists web, API, Windows, macOS, self-hosted, and iOS availability.

How should I compare deployment models?

Compare deployment model with the platforms you need. Web access, an API, and self-hosting are different ways to use or deploy a tool; confirm the fit for your organization.

What threat detection and remediation do I need?

Compare the threat detection features and whether the tool can remediate threats after delivery. Consider data loss prevention as well if you need to address sensitive information in email.

How can I compare plans, trials, and pricing?

Check whether a tool has a free plan or a free trial, and compare the paid starting price. Pricing on request means you need to ask the maker for a quote.

How many users can the tool support?

Compare the maximum users figure with the size of your organization. Confirm that the limit works for your current needs before choosing a tool.

Questions

What should I compare in cloud email security software?

Compare threat detection, email platform support, deployment model, remediation after delivery, data loss prevention, maximum users, and plan or trial terms.

Does cloud email security software have a free plan?

Mailprotector is listed with a free plan. The board also compares free plans and paid starting prices.

Can I try cloud email security software for free?

Some listed tools have free trials. Check a tool's pricing details for trial availability and length.

What platforms does cloud email security software run on?

Listed platform options include web, API, Windows, macOS, self-hosted, and iOS. Check the individual tool for its supported platforms.

What does pricing on request mean for email security?

It means the maker asks you to request pricing rather than showing a price. Ask the maker for a quote.

Some top positions on this board can be paid placements, standing where they were sold. The facts on each platform are not for sale. How we rank · Disclosure