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Head-to-head · Email Security Gateways

Mimecast Secure Email Gateway vs FortiMail Email Security

  • Updated Oct 2026
  • Both researched from official sources
  • 6 checks side by side
Higher score Mimecast Secure Email Gateway #6 in Email Security Gateways 8.7/10 Pricing on request ✓ 5 of 5 features Visit Mimecast
FortiMail Email Security #11 in Email Security Gateways 8.2/10 Pricing on request ✓ 5 of 5 features Visit Fortinet

Mimecast Secure Email Gateway 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 scoreMimecast Secure Email Gateway · 8.7/10

Mimecast Secure Email Gateway scores higher on our rubric for email security gateways: 8.7 against 8.2 out of 10; our editors rank them #6 and #11.

On deployment model, FortiMail Email Security gives you Hybrid where Mimecast Secure Email Gateway offers Cloud.

Mimecast Secure Email Gateway is the better fit for mature all-around email protection. FortiMail Email Security is the better fit for fortinet-centered security environments.

  • Mimecast Secure Email Gateway fits best

    Mature all-around email protection

  • FortiMail Email Security fits best

    Fortinet-centered security environments

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Side by side

Feature Mimecast Secure Email Gateway 8.7/10 Visit ↗ FortiMail Email Security 8.2/10 Visit ↗
At a glance
Editor score 8.7 8.2
Ranking #6 in Email Security Gateways #11 in Email Security Gateways
Best for Mature all-around email protection Fortinet-centered security environments
Pricing model Paid Paid
Starting price — Pricing on request
Free plan — Not checked yet
Free trial — —
Deployment Cloud Self-hosted
Integrations 5 integrations 6 integrations
Features Mimecast Secure Email Gateway 5/5 · FortiMail Email Security 5/5
Outbound filtering ✓ ✓
Impersonation protection ✓ ✓
Malware sandboxing ✓ ✓
Microsoft 365 support ✓ ✓
Google Workspace support ✓ ✓
Specs
Deployment model Cloud Hybrid
Our review
Pros
  • Scans inbound, outbound, and internal email
  • Combines BEC protection, sandboxing, URL analysis, and DLP
  • Integrates with Microsoft 365, Google Workspace, and security platforms
  • 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
  • Pricing requires contact with sales
  • No free plan is offered
  • Its broad control set may exceed simpler email-security needs
  • 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

Mimecast Secure Email Gateway is a cloud-based email security service for organizations using Microsoft 365, Google Workspace, on-premises, or hybrid email environments. It inspects inbound, outbound, and internal messages with layered…

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. Mimecast Secure Email GatewayEmail Security Gateways 8.7Pricing on request
  2. FortiMail Email SecurityEmail Security Gateways 8.2Pricing on request

Strengths and trade-offs

  • Mimecast Secure Email Gateway — where it wins

    • Scans inbound, outbound, and internal email
    • Combines BEC protection, sandboxing, URL analysis, and DLP
    • Integrates with Microsoft 365, Google Workspace, and security platforms

    Where it doesn't

    • Pricing requires contact with sales
    • No free plan is offered
    • Its broad control set may exceed simpler email-security needs
  • 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
  • Mimecast Secure Email Gateway8.7/10 · Pricing on request

    A broad email security gateway for organizations needing layered protection and policy control.

    Visit MimecastFull verdict →
  • FortiMail Email Security8.2/10 · Pricing on request

    A broad email security platform suited to Fortinet-centered hybrid environments.

    Visit FortinetFull verdict →

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update