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Head-to-head · Email Security Gateways

Mimecast Secure Email Gateway vs Abnormal 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
Abnormal Email Security #8 in Email Security Gateways 8.5/10 Pricing on request ✓ 4 of 5 features Visit Abnormal AI

Mimecast Secure Email Gateway leads on 0 checks, Abnormal 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
  • Most featuresMimecast Secure Email Gateway · 5 of 5

Mimecast Secure Email Gateway scores higher on our rubric for email security gateways: 8.7 against 8.5 out of 10; our editors rank them #6 and #8.

Mimecast Secure Email Gateway is the better fit for mature all-around email protection. Abnormal Email Security is the better fit for behavioral BEC and vendor-fraud defense.

  • Mimecast Secure Email Gateway fits best

    Mature all-around email protection

  • Abnormal Email Security fits best

    Behavioral BEC and vendor-fraud defense

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Side by side

Feature Mimecast Secure Email Gateway 8.7/10 Visit ↗ Abnormal Email Security 8.5/10 Visit ↗
At a glance
Editor score 8.7 8.5
Ranking #6 in Email Security Gateways #8 in Email Security Gateways
Best for Mature all-around email protection Behavioral BEC and vendor-fraud defense
Pricing model Paid Paid
Starting price — Pricing on request
Free plan — Not checked yet
Free trial — —
Deployment Cloud Cloud
Platforms Web Web
Integrations 5 integrations 2 integrations
Features Mimecast Secure Email Gateway 5/5 · Abnormal Email Security 4/5
Outbound filtering ✓ ✓
Impersonation protection ✓ ✓
Malware sandboxing ✓ (best) Not checked yet
Microsoft 365 support ✓ ✓
Google Workspace support ✓ ✓
Specs
Deployment model Cloud Cloud
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
  • Behavioral AI analyzes identity, relationships, and communication patterns.
  • Automates email triage, investigation workflows, and remediation.
  • Protects Microsoft 365 and Google Workspace through API integrations.
Cons
  • Pricing requires contact with sales
  • No free plan is offered
  • Its broad control set may exceed simpler email-security needs
  • Pricing requires a demo or custom quote.
  • Cloud deployment is centered on Microsoft 365 and Google Workspace.
  • The strongest focus is socially engineered email threats.
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 →

Abnormal Email Security is a cloud-native email security platform for organizations using Microsoft 365 or Google Workspace. It connects through APIs and focuses on socially engineered threats that can bypass conventional filtering,…

Read the review →
  1. Mimecast Secure Email GatewayEmail Security Gateways 8.7Pricing on request
  2. Abnormal Email SecurityEmail Security Gateways 8.5Pricing 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

  • Abnormal Email Security — where it wins

    • Behavioral AI analyzes identity, relationships, and communication patterns.
    • Automates email triage, investigation workflows, and remediation.
    • Protects Microsoft 365 and Google Workspace through API integrations.

    Where it doesn't

    • Pricing requires a demo or custom quote.
    • Cloud deployment is centered on Microsoft 365 and Google Workspace.
    • The strongest focus is socially engineered email threats.
  • 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 →
  • Abnormal Email Security8.5/10 · Pricing on request

    A focused cloud gateway for BEC, phishing, vendor fraud, and outbound DLP.

    Visit Abnormal AIFull 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