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Head-to-head · Email Security Gateways

Sublime Security vs FortiMail Email Security

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Sublime Security #1 in Email Security Gateways 9.4/10 Free plan Free plan✓ 5 of 5 features Try Sublime Security
FortiMail Email Security #11 in Email Security Gateways 8.2/10 Pricing on request ✓ 5 of 5 features Visit Fortinet

Sublime Security leads on 0 checks, FortiMail Email Security on 0, and 6 are even. Who comes out ahead on the 6 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreSublime Security · 9.4/10
  • Free planonly Sublime Security

Sublime Security scores higher on our rubric for email security gateways: 9.4 against 8.2 out of 10; our editors rank them #1 and #11.

Sublime Security is the better fit for teams wanting strong value and customization. FortiMail Email Security is the better fit for fortinet-centered security environments.

  • Sublime Security fits best

    Teams wanting strong value and customization

  • FortiMail Email Security fits best

    Fortinet-centered security environments

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Side by side

Feature Sublime Security 9.4/10 Visit ↗ FortiMail Email Security 8.2/10 Visit ↗
At a glance
Editor score 9.4 8.2
Ranking #1 in Email Security Gateways #11 in Email Security Gateways
Best for Teams wanting strong value and customization Fortinet-centered security environments
Pricing model Free plan + paid Paid
Starting price — Pricing on request
Free plan ✓ (best) Not checked yet
Free trial — —
Deployment Cloud, Self-hosted Self-hosted
Integrations 9 integrations 6 integrations
Features Sublime Security 5/5 · FortiMail Email Security 5/5
Outbound filtering ✓ ✓
Impersonation protection ✓ ✓
Malware sandboxing ✓ ✓
Microsoft 365 support ✓ ✓
Google Workspace support ✓ ✓
Specs
Deployment model Hybrid Hybrid
Our review
Pros
  • Free Core plan includes AI detection and response features
  • Detects impersonation, malware, phishing, and policy violations
  • Supports Microsoft 365, Google Workspace, APIs, SIEM/SOAR, and CrowdStrike
  • Protects inbound and outbound email against malware, spam, and impersonation
  • Combines DLP, encryption, sandboxing, clawback, quarantine, and reporting
  • Integrates with Microsoft 365, Google Workspace, and Fortinet Security Fabric
Cons
  • Core is intended for lightweight deployments
  • Advanced controls are reserved for Enterprise
  • Premium support is available with Enterprise
  • Pricing requires contact with sales
  • The broad feature set may exceed narrower email security needs
  • Some deployment options require alignment with Fortinet infrastructure
Our verdict

Sublime Security is an AI-powered email security platform for organizations using Microsoft 365, Google Workspace, IMAP, or direct APIs. It covers phishing, business email compromise, malware, impersonation, spam, and policy violations,…

Read the review →

FortiMail Email Security is Fortinet’s email protection platform for organizations managing inbound and outbound email threats across on-premises, cloud, or hybrid environments. It combines malware and spam protection with impersonation…

Read the review →
  1. Sublime SecurityEmail Security Gateways 9.4Free plan
  2. FortiMail Email SecurityEmail Security Gateways 8.2Pricing on request

Strengths and trade-offs

  • Sublime Security — where it wins

    • Free Core plan includes AI detection and response features
    • Detects impersonation, malware, phishing, and policy violations
    • Supports Microsoft 365, Google Workspace, APIs, SIEM/SOAR, and CrowdStrike

    Where it doesn't

    • Core is intended for lightweight deployments
    • Advanced controls are reserved for Enterprise
    • Premium support is available with Enterprise
  • FortiMail Email Security — where it wins

    • Protects inbound and outbound email against malware, spam, and impersonation
    • Combines DLP, encryption, sandboxing, clawback, quarantine, and reporting
    • Integrates with Microsoft 365, Google Workspace, and Fortinet Security Fabric

    Where it doesn't

    • Pricing requires contact with sales
    • The broad feature set may exceed narrower email security needs
    • Some deployment options require alignment with Fortinet infrastructure

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update