Mimecast Email Security vs Retarus Email Security

Mimecast Email Security7.9Visit Retarus Email Security7.0Visit

Higher score Mimecast Email Security #6 in Email Anti-Spam Software 7.9/10 Pricing on request · 30-day trial Free trial✓ 3 of 3 features Visit Mimecast

vs

Retarus Email Security #16 in Email Anti-Spam Software 7.0/10 Pricing on request ✓ 3 of 3 features Visit Retarus

• Mimecast Email Security fits best

  Enterprises wanting mature secure email infrastructure

• Retarus Email Security fits best

  Security teams needing forensic email controls

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Side by side

Feature	Mimecast Email Security 7.9/10 Visit ↗	Retarus Email Security 7.0/10 Visit ↗
At a glance
Editor score	7.9	7.0
Ranking	#6 in Email Anti-Spam Software	#16 in Email Anti-Spam Software
Best for	Enterprises wanting mature secure email infrastructure	Security teams needing forensic email controls
Pricing model	Paid	Paid
Starting price	—	Pricing on request
Free plan	—	Not checked yet
Free trial	30 days	—
Deployment	Cloud	Cloud
Platforms	Web	Web
Support	Docs, Community	Phone, Tickets, Docs
Compliance	SOC 2, ISO 27001, GDPR, HIPAA	SOC 2, ISO 27001, GDPR, HIPAA, PCI DSS
Integrations	300+ integrations	3 integrations
Built for	Small business, Mid-market, Enterprise	Mid-market, Enterprise
Features Mimecast Email Security 3/3 · Retarus Email Security 3/3
Phishing detection	✓	✓
Malware scanning	✓	✓
Attachment scanning	✓	✓
Specs
Quarantine access	User_and_admin	User_and_admin
Supported mail platforms	Microsoft 365, Google Workspace, on-premises and hybrid email	Microsoft 365; existing email systems and mail servers
Quarantine retention	Not checked yet	30 days
Deployment type	Cloud_gateway	Cloud_gateway
Our review
Pros	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	Multiscan antivirus, sandboxing and malware rescan protect attachments Phishing, spoofing and post-delivery detection cover varied email threats Forensic SIEM integration supports security event and log workflows
Cons	Pricing requires contacting sales No perpetual free plan is offered Plan differences require comparing continuity, backup, and collaboration features	Pricing requires a sales conversation rather than a published plan table Quarantine retention is 30 days by default Cloud-gateway deployment may not suit every email architecture
Our verdict	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… Read the review →	Retarus Email Security is a cloud-based email protection service for organizations with complex or hybrid mail infrastructures. It can operate as a secure email gateway or connect with Microsoft 365 through an ICES connector, while also… Read the review →

Strengths and trade-offs

• Mimecast Email Security — 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

• Retarus Email Security — where it wins

  • Multiscan antivirus, sandboxing and malware rescan protect attachments
  • Phishing, spoofing and post-delivery detection cover varied email threats
  • Forensic SIEM integration supports security event and log workflows

  Where it doesn't

  • Pricing requires a sales conversation rather than a published plan table
  • Quarantine retention is 30 days by default
  • Cloud-gateway deployment may not suit every email architecture

• Mimecast Email Security7.9/10 · Pricing on request · 30-day trial

  A broad email-security suite for organizations protecting complex mail environments.

  Visit MimecastFull verdict →
• Retarus Email Security7.0/10 · Pricing on request

  A forensic-focused email gateway for organizations managing complex or hybrid mail systems.

  Visit RetarusFull verdict →