Mimecast Email Security
Mimecast Email Security: A broad email-security suite for organizations protecting complex mail environments. Ranked #6 of 27 in Email Anti-Spam Software by our editors (7.9/10); pricing: Pricing on request · 30-day trial; best for enterprises wanting mature secure email infrastructure.
At a glance
- Editor score7.9 / 10
- PricingPricing on request · 30-day trial
- Best forEnterprises wanting mature secure email infrastructure
- Free planNo
- Phishing detectionYes
- Founded2003 · London, United Kingdom
- Facts checked22 Sep 2026
Where it wins
- AI detection covers phishing, BEC, anomalies, malicious URLs, and attachments
- Supports Microsoft 365, Google Workspace, on-premises, and hybrid email
- Integrates with CrowdStrike, Okta, Splunk, and Microsoft Sentinel
Where it doesn't
- Pricing requires contacting sales
- No perpetual free plan is offered
- Plan differences require comparing continuity, backup, and collaboration features
Our verdict on Mimecast Email Security
Mimecast Email Security is a cloud-based email protection service for organizations using Microsoft 365, Google Workspace, on-premises, or hybrid email. It targets teams that need centralized controls for phishing, business email compromise, malware, ransomware, spam, malicious URLs, and weaponized attachments. The product supports both MX-based secure-gateway deployment and API-based protection for cloud email, making it suitable for organizations with mixed or changing mail infrastructure.
Pricing is sales-led rather than self-serve. The published plans include Critical, Advanced, and Premium, with no perpetual free plan. Critical combines AI-powered BEC protection, attachment sandboxing, malware scanning, spam filtering, email continuity, and secure delivery for messages and large files. Advanced adds email backup and recovery plus browser isolation, while Premium includes email continuity and collaboration-tool protection. A 30-day trial provides a time-limited way to evaluate the service before purchase.
Its strongest differentiator is breadth across prevention, remediation, continuity, and security operations. AI-powered phishing, BEC, and anomaly detection works alongside real-time malicious-URL analysis, on-click protection, quarantine workflows, and advanced attachment sandboxing. Integrations with CrowdStrike, Netskope, Palo Alto Networks, Okta, Splunk, and Microsoft Sentinel support wider security-tool workflows and threat-intelligence sharing. Choose Mimecast Email Security when layered protection and deployment flexibility matter more than simple, self-service pricing. Organizations seeking only basic spam filtering or a perpetual free option should look elsewhere.
Your product? Our editors can test Mimecast Email Security in depth and publish a review, labelled as paid · from $149/mo →
Mimecast Email Security pricing
All 3 Mimecast Email Security plans and prices →
Mimecast Email Security fact sheet
| Free plan | No |
|---|---|
| Paid from | Not verified |
| Phishing detection | Yes |
| Malware scanning | Yes |
| Attachment scanning | Yes |
| Quarantine access | User_and_admin |
| Supported mail platforms | Microsoft 365, Google Workspace, on-premises and hybrid email |
| Quarantine retention | Not verified |
| Deployment type | Cloud_gateway |
| Free trial | 30 days · no card needed |
| Deployment | Cloud |
| Platforms | Web |
| Compliance & security | SOC 2, ISO 27001, GDPR, HIPAA |
| Support | Docs, Community |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 300+ integrations: CrowdStrike, Netskope, Palo Alto Networks, Okta, Splunk, Microsoft Sentinel See all → |
| Pricing | Pricing on request · 30-day trial (source) |
| Website | mimecast.com |
| Facts checked | 22 Sep 2026 |
Mimecast Email Security integrations
Mimecast Email Security lists 300+ integrations on its own site — the 6 named here are the ones its pages call out.
- CrowdStrike
- Netskope
- Palo Alto Networks
- Okta
- Splunk
- Microsoft Sentinel
See all Mimecast Email Security integrations →
Alternatives to Mimecast Email Security
- Barracuda Message ArchiverA strong email archive for compliance workflows, but not a primary anti-spam filter.9.4
- Symantec IT Management SuiteA broad endpoint management suite, but not a focused email anti-spam product.9.3
- MX GuarddogA low-cost cloud gateway for domain owners who run their own email servers.8.7
See all Mimecast Email Security alternatives →
Mimecast Email Security vs the competition
- Mimecast Email Security vs Barracuda Message Archiver
- Mimecast Email Security vs Symantec IT Management Suite
- Mimecast Email Security vs MX Guarddog
- Mimecast Email Security vs N-able Mail Assure
- Mimecast Email Security vs Forcepoint Email Security Cloud
- Mimecast Email Security vs Rspamd
Compare Mimecast Email Security with any tool side by side →
Also Ranked In
Mimecast Email Security is ranked in 3 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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