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Head-to-head · Email Security Gateways

Mimecast Secure Email Gateway vs Hornetsecurity 365 Total Protection

  • 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
Hornetsecurity 365 Total Protection #10 in Email Security Gateways 8.3/10 Pricing on request · 14-day trial Free trial✓ 4 of 5 features Visit Hornetsecurity

Mimecast Secure Email Gateway leads on 1 check, Hornetsecurity 365 Total Protection on 0, and 5 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
  • Free trialonly Hornetsecurity 365 Total Protection
  • Most featuresMimecast Secure Email Gateway · 5 of 5

Mimecast Secure Email Gateway scores higher on our rubric for email security gateways: 8.7 against 8.3 out of 10; our editors rank them #6 and #10.

On deployment model, Hornetsecurity 365 Total Protection gives you Hybrid where Mimecast Secure Email Gateway offers Cloud. Mimecast Secure Email Gateway offers google workspace support; Hornetsecurity 365 Total Protection doesn't.

Mimecast Secure Email Gateway is the better fit for mature all-around email protection. Hornetsecurity 365 Total Protection is the better fit for microsoft 365 protection suites.

  • Mimecast Secure Email Gateway fits best

    Mature all-around email protection

  • Hornetsecurity 365 Total Protection fits best

    Microsoft 365 protection suites

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Side by side

Feature Mimecast Secure Email Gateway 8.7/10 Visit ↗ Hornetsecurity 365 Total Protection 8.3/10 Visit ↗
At a glance
Editor score 8.7 8.3
Ranking #6 in Email Security Gateways #10 in Email Security Gateways
Best for Mature all-around email protection Microsoft 365 protection suites
Pricing model Paid Paid
Starting price — —
Free plan — —
Free trial — 14 days
Deployment Cloud Cloud
Platforms Web Web
Integrations 5 integrations 7 integrations
Features Mimecast Secure Email Gateway 5/5 · Hornetsecurity 365 Total Protection 4/5
Outbound filtering ✓ ✓
Impersonation protection ✓ ✓
Malware sandboxing ✓ ✓
Microsoft 365 support ✓ ✓
Google Workspace support ✓ (best) —
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
  • Combines filtering, sandboxing, URL analysis and BEC detection
  • Adds archiving, continuity, backup and recovery across higher plans
  • Integrates with Microsoft 365, Teams, OneDrive and Entra ID
Cons
  • Pricing requires contact with sales
  • No free plan is offered
  • Its broad control set may exceed simpler email-security needs
  • Pricing requires contacting sales
  • No free plan is offered
  • Its ecosystem focus is Microsoft 365 rather than Google Workspace
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 →

Hornetsecurity 365 Total Protection is a cloud-based security suite for organizations using Microsoft 365. It brings together spam, malware and phishing filtering with advanced threat protection, malware sandboxing, URL rewriting, quishing…

Read the review →
  1. Mimecast Secure Email GatewayEmail Security Gateways 8.7Pricing on request
  2. Hornetsecurity 365 Total ProtectionEmail Security Gateways 8.3Pricing on request · 14-day trial

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

  • Hornetsecurity 365 Total Protection — where it wins

    • Combines filtering, sandboxing, URL analysis and BEC detection
    • Adds archiving, continuity, backup and recovery across higher plans
    • Integrates with Microsoft 365, Teams, OneDrive and Entra ID

    Where it doesn't

    • Pricing requires contacting sales
    • No free plan is offered
    • Its ecosystem focus is Microsoft 365 rather than Google Workspace
  • 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 →
  • Hornetsecurity 365 Total Protection8.3/10 · Pricing on request · 14-day trial

    A broad Microsoft 365 protection suite with layered email security and data recovery.

    Visit HornetsecurityFull verdict →

More comparisons

All email security gateways comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update