Mimecast alternatives

At a glance

We list 11 other email security tools as alternatives to Mimecast: Abnormal AI, Barracuda Email Protection, dmarcian, EasyDMARC, Ironscales, Material Security, PowerDMARC, Proofpoint, Red Sift, Sublime Security and Valimail.
dmarcian, PowerDMARC, Sublime Security and Valimail have a free plan.
Barracuda Email Protection, EasyDMARC, Ironscales and Proofpoint work with Slack, as Mimecast does.

From each tool's own website and from published reviews. Each tool's page says when its facts were checked.

11 alternatives

Listed alphabetically. A tool is ranked by its reviews once it has 3.

Abnormal AI
Behavioral AI security platform for email, identity, and AI security.
No reviews yet
Choose it over Mimecast for: integration with Microsoft 365, Google Workspace or Okta.
Integrations shared with Mimecast
None in common
Main features
Inbound email security, Account takeover protection, AI security mailbox
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Barracuda Email Protection
A complete email security solution with AI-enhanced defenses, automated response and easy deployment.
No reviews yet
Choose it over Mimecast for: integration with Microsoft 365, Google Workspace or Microsoft Teams.
Integrations shared with Mimecast
Slack
Main features
Account takeover protection, Phishing and BEC protection, Automated incident response
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dmarcian
Gives internet domain owners control over their email domains with DMARC.
No reviews yet
No checked fact sets it apart from Mimecast yet.
Free plan
Yes
Paid plans from
Basic, $24 per month, billed monthly (as of November 14, 2026)
Free trial
30 days
Main features
Alert Central, Detail Viewer, Source Viewer
Security and compliance
SSO
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EasyDMARC
An all-in-one DMARC platform that helps secure communications and stay compliant.
No reviews yet
Choose it over Mimecast for: integration with Splunk, Cloudflare or Mailchimp.
Paid plans from
DMARC Plus, $35.99 per month, billed annually (as of November 14, 2026)
Free trial
Yes
Integrations shared with Mimecast
Slack
Main features
DMARC monitoring, Managed SPF, DNS management
Security and compliance
SSO
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Be the first to review
Ironscales
AI email security that stops phishing and business email compromise.
No reviews yet
Choose it over Mimecast for: Microsoft 365, Google Workspace or Microsoft Teams; integration with Microsoft Sentinel, Okta or Splunk.
Free trial
Yes
Platforms
Microsoft 365, Google Workspace, Microsoft Teams
Integrations shared with Mimecast
Slack
Main features
Red Teaming Agent, Phishing SOC Agent, Phishing simulation
Security and compliance
GDPR, SSO
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Material Security
Phishing protection, account takeover prevention, and email DLP for Google Workspace and Microsoft 365.
No reviews yet
Choose it over Mimecast for: integration with Google Workspace or Microsoft 365.
Paid plans from
Essentials, $4 per user per month, billed annually, plus a fee based on Shared Drive size (as of November 14, 2026)
Free trial
Yes
Integrations shared with Mimecast
None in common
Main features
Email security, OAuth security, Account takeover containment
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Be the first to review
PowerDMARC
A complete DMARC service for email authentication, deliverability, reputation, and DNS compliance.
No reviews yet
Choose it over Mimecast for: integration with Splunk, Microsoft Sentinel or ConnectWise.
Free plan
Yes
Paid plans from
Basic, $8 per month, from $8 for 50,000 emails per month, up to $250 (as of November 14, 2026)
Free trial
15 days
Integrations shared with Mimecast
None in common
Main features
Hosted DMARC, DMARC AI Agent, MCP Server
Security and compliance
SOC 2, ISO 27001, GDPR, SSO
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Be the first to review
Proofpoint
Agentic security for people, data, and AI, with intent-based protection for every person and AI agent.
No reviews yet
Choose it over Mimecast for: integration with Microsoft Teams or Claude.
Integrations shared with Mimecast
Slack
Main features
Intent-based threat detection, Account takeover protection, Email fraud defense
Security and compliance
SSO
Compare with Mimecast
Be the first to review
Red Sift
Red Sift helps security and IT teams embrace protocols like DMARC, SPF, DKIM and TLS.
No reviews yet
No checked fact sets it apart from Mimecast yet.
Free trial
14 days
Main features
DMARC automation, DNS Guardian, Dynamic SPF
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Sublime Security
Agentic email security tailored to your organization.
No reviews yet
Choose it over Mimecast for: integration with GitHub.
Free plan
Yes
Integrations shared with Mimecast
None in common
Main features
Adaptive detection engine, Autonomous Security Analyst, Autonomous Detection Engineer
Security and compliance
SSO
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Be the first to review
Valimail
Automated DMARC, DKIM, and SPF email authentication to stop phishing and spoofing.
No reviews yet
Choose it over Mimecast for: integration with Microsoft 365 or Google Workspace.
Free plan
Yes
Plans
Enforce: Custom, Amplify: Custom (as of November 14, 2026)
Integrations shared with Mimecast
None in common
Main features
Domain monitoring, DMARC enforcement, Instant SPF
Security and compliance
SOC 2, GDPR, HIPAA
Compare with Mimecast
Be the first to review

People who moved on from Mimecast

From reviews of other tools that say they used Mimecast before.

No reviewer has said they switched from Mimecast yet.

Use Mimecast?

Your review helps people decide whether to stay or switch. Review Mimecast

At a glance

We list 11 other email security tools as alternatives to Mimecast: Abnormal AI, Barracuda Email Protection, dmarcian, EasyDMARC, Ironscales, Material Security, PowerDMARC, Proofpoint, Red Sift, Sublime Security and Valimail.

dmarcian, PowerDMARC, Sublime Security and Valimail have a free plan.

Barracuda Email Protection, EasyDMARC, Ironscales and Proofpoint work with Slack, as Mimecast does.

From each tool's own website and from published reviews. Each tool's page says when its facts were checked.