
Mimecast Secure Email Gateway
Mimecast Secure Email Gateway is a cloud-deployed email security service accessed through the web.
What Mimecast Secure Email Gateway is
Mimecast Secure Email Gateway is a cloud-deployed email security service accessed through the web. It supports Microsoft 365, Google Workspace, on-premises email, and hybrid email environments. Listed protections include phishing detection, malware scanning, attachment scanning, malware sandboxing, impersonation protection, and outbound filtering, with quarantine access for both users and administrators. Three paid plans are available: Critical, Advanced, and Premium. All include AI-powered business email compromise protection, advanced attachment sandboxing and detection, malware scanning, spam filtering, and outbound and internal email scanning. Critical adds email continuity, Advanced adds data protection, and Premium adds collaboration-tool protection. Pricing is on request, and there is no free plan. Mimecast was founded in 2003 and is headquartered in London, United Kingdom. The cloud gateway model provides one listed deployment approach for supported mail systems.
Good
- Phishing and malware detection
- Attachment sandboxing
- Impersonation protection
- User and administrator quarantine access
- Supports major and hybrid mail environments
Watch out
- No free plan
- Pricing is available on request
- Cloud deployment is the listed model
- Plan additions differ by tier
Who it suits
This suits organizations securing Microsoft 365, Google Workspace, on-premises, or hybrid email. Buyers can choose among plans based on continuity, data protection, or collaboration-tool protection needs.
Verdict
Mimecast Secure Email Gateway covers common email threats across cloud, on-premises, and hybrid environments. Compare the three plans' added protections and request pricing for your deployment.
Plans and prices
From Mimecast Secure Email Gateway's own pricing page, checked 20 Sep 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Critical | Priced on request | AI-powered BEC protection · Advanced attachment sandboxing and detection · Malware scanning · Spam filtering · Outbound and internal email scanning · Email continuity |
| Advanced | Priced on request | AI-powered BEC protection · Advanced attachment sandboxing and detection · Malware scanning · Spam filtering · Outbound and internal email scanning · Data protection |
| Premium | Priced on request | AI-powered BEC protection · Advanced attachment sandboxing and detection · Malware scanning · Spam filtering · Outbound and internal email scanning · Collaboration-tool protection |
The facts
Each one read from Mimecast Secure Email Gateway's own pages, with the date it was checked.
The company
- Founded
- 2003checked 23 Sep 2026
- Headquarters
- London, United Kingdomchecked 23 Sep 2026
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