Enterprise Email Gateway · Head-to-Head
Mimecast vs Abnormal Security
Abnormal Security and Mimecast are both ai email security solutions. Abnormal Security aI-powered email security platform specializing in behavioral detection of social engineering attacks, while Mimecast cloud email security platform with threat protection, archiving, and continuity. The best choice depends on your organization's size, technical requirements, and budget.
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The Verdict
Choose Abnormal Security if superior detection of socially-engineered attacks with no malicious payload is your priority and organizations facing sophisticated social engineering and BEC attacks that bypass traditional email gateways. Choose Mimecast if email continuity keeps mail flowing during outages — unique differentiator matters most and mid-to-large enterprises wanting a unified email security, archiving, and continuity platform with strong API integrations.
Tried Mimecast or Abnormal Security? Drop a quick rating.
Feature-by-Feature Comparison
| Feature | Abnormal Security | Mimecast |
|---|---|---|
| Pricing | Custom pricing / per-user licensing | Custom pricing / per-user licensing |
| Pricing Model | Per-user subscription | Per-user subscription |
| Open Source | No | No |
| Deployment | Cloud | Cloud |
| Best For | Mid-to-large enterprises wanting a unified email security, archiving, and continuity platform with strong API integrations | Organizations facing sophisticated social engineering and BEC attacks that bypass traditional email gateways |
| Behavioral AI threat detection | Not available | Supported |
| Business email compromise prevention | Not available | Supported |
| Vendor and supply chain fraud detection | Not available | Supported |
When to Choose Each Tool
Choose Abnormal Security when:
- +You value email continuity keeps mail flowing during outages — unique differentiator
- +You value strong impersonation and brand protection capabilities
- +You value unified platform covering security, archiving, and continuity
- +You want to avoid does not replace a full email gateway — typically layers on top of one
- +You want to avoid less effective against traditional malware and payload-based attacks
Choose Mimecast when:
- +You value superior detection of socially-engineered attacks with no malicious payload
- +You value aPI-based deployment requires no MX record changes — deploys in minutes
- +You value behavioral AI catches novel attacks that signature-based tools miss
- +You want to avoid detection efficacy slightly behind Proofpoint for advanced threats
- +You want to avoid email archiving search performance can be slow on large datasets
Other Mimecast Alternatives
Enterprise email security platform for advanced threat protection, compliance, and data loss prevention
Microsoft's native email security for Microsoft 365 with XDR integration
Email threat protection platform available as gateway appliance or cloud service
Enterprise email security gateway with Cisco Talos threat intelligence integration
Cloud email security gateway with AI-powered BEC detection and XDR integration
AI-powered anti-phishing platform with crowdsourced threat intelligence
Human layer security platform preventing inbound threats and outbound misdirected emails
Pros & Cons Comparison
Abnormal Security
Pros
- +Superior detection of socially-engineered attacks with no malicious payload
- +API-based deployment requires no MX record changes — deploys in minutes
- +Behavioral AI catches novel attacks that signature-based tools miss
- +Extremely low false positive rate due to identity-based detection
- +Strong vendor and supply chain fraud detection capabilities
Cons
- –Does not replace a full email gateway — typically layers on top of one
- –Less effective against traditional malware and payload-based attacks
- –Premium pricing for what is an additional security layer
- –Behavioral models need time to learn organization communication patterns
- –No email archiving, DLP, or compliance capabilities
Mimecast
Pros
- +Email continuity keeps mail flowing during outages — unique differentiator
- +Strong impersonation and brand protection capabilities
- +Unified platform covering security, archiving, and continuity
- +Good API ecosystem for SIEM and SOAR integrations
- +Easier administration compared to Proofpoint for mid-market teams
Cons
- –Detection efficacy slightly behind Proofpoint for advanced threats
- –Email archiving search performance can be slow on large datasets
- –Pricing is still premium and comparable to Proofpoint
- –URL rewriting can break some legitimate links
- –Security awareness training less mature than dedicated platforms
Sources & References
- Abnormal Security — Official Website & Documentation[Vendor]
- Mimecast — Official Website & Documentation[Vendor]
- Abnormal Security Reviews on G2[User Reviews]
- Mimecast Reviews on G2[User Reviews]
- Abnormal Security Reviews on TrustRadius[User Reviews]
- Mimecast Reviews on TrustRadius[User Reviews]
- Abnormal Security Reviews on PeerSpot[User Reviews]
- Mimecast Reviews on PeerSpot[User Reviews]
- Gartner Magic Quadrant for Email Security 2024[Analyst Report]
- Forrester Wave: Enterprise Email Security, Q2 2024[Analyst Report]
- SE Labs: Email Security Gateway Tests[Independent Testing]
- Anti-Phishing Working Group: Phishing Activity Trends[Industry Research]
- Gartner Peer Insights: Email Security[Peer Reviews]
Mimecast vs Abnormal Security FAQ
Quick answers for teams evaluating Mimecast vs Abnormal Security.
What is the main difference between Mimecast and Abnormal Security?
Abnormal Security and Mimecast are both ai email security solutions. Abnormal Security aI-powered email security platform specializing in behavioral detection of social engineering attacks, while Mimecast cloud email security platform with threat protection, archiving, and continuity. The best choice depends on your organization's size, technical requirements, and budget.
Is Abnormal Security better than Mimecast?
Choose Abnormal Security if superior detection of socially-engineered attacks with no malicious payload is your priority and organizations facing sophisticated social engineering and BEC attacks that bypass traditional email gateways. Choose Mimecast if email continuity keeps mail flowing during outages — unique differentiator matters most and mid-to-large enterprises wanting a unified email security, archiving, and continuity platform with strong API integrations.
How much does Abnormal Security cost compared to Mimecast?
Abnormal Security starts at Custom pricing / per-user licensing (per-user subscription). Mimecast starts at Custom pricing / per-user licensing (per-user subscription). As always, the sticker price only tells part of the story. Factor in add-ons, implementation costs, and what's actually included at each tier.
Can I migrate from Mimecast to Abnormal Security?
It depends on how deeply Mimecast is embedded in your stack. Most teams run both in parallel for a few weeks before cutting over. Check whether Abnormal Security supports importing your existing configs or policies. That's usually the biggest time sink.
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