Mimecast Advanced Email Security Alternatives (2026)

Mimecast
Mimecast Advanced Email Security
4.4 (297) · G2 7.9/10
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Starting price
Custom quote
Free trial
30 days
Deployment
Cloud
Best for
Mid-market to enterprise teams wanting email security bundled with archiving + continuity

Our verdict

The top alternatives to Mimecast Advanced Email Security are IRONSCALES, Proofpoint Email Protection, Check Point Harmony Email (Avanan). IRONSCALES is the closest like-for-like option (4.7/5 (~45 G2 reviews), from $3.11/mailbox/mo). People typically switch from Mimecast Advanced Email Security over pricing model, complexity, or a missing capability — the table compares each alternative on exactly those axes.

  1. 1IRONSCALES

    ★ Editor's Choice 8.4 4.7 (45)

    Best for MSPs and mid-market teams wanting human + AI phishing defense with public self-serve pricing.

    • API-based deployment (no MX change)
    • Human + AI crowdsourced detection
    • Automated phishing remediation
    • Phishing simulation + training
    Free trial Free version
    Visit IRONSCALES → From $3.11/mailbox/mo Mimecast Advanced Email Security vs IRONSCALES →

  2. 2Proofpoint Email Protection

    8.3 4.6 (548)

    Best for Regulated enterprises wanting the most mature secure email gateway with deep threat intelligence.

    • Secure email gateway (MX-routed)
    • NexusAI threat detection
    • TAP attachment + URL sandboxing
    • TRAP auto-pull remediation
    Free trial Free version
    Visit Proofpoint Email Protection → From Custom quote Mimecast Advanced Email Security vs Proofpoint Email Protection →

  3. 3Check Point Harmony Email (Avanan)

    8.1 4.6 (511)

    Best for Microsoft 365 / Google Workspace shops wanting API-based protection with no MX change.

    • Inline API deployment (no MX change)
    • Post-delivery + internal email scanning
    • Anti-phishing + malware + BEC
    • Account takeover detection
    Free trial Free version
    Visit Check Point Harmony Email (Avanan) → From Custom quote Mimecast Advanced Email Security vs Check Point Harmony Email (Avanan) →

  4. 4Abnormal AI

    8.0 4.8 (65)

    Best for Enterprises prioritizing best-in-class behavioral AI detection of BEC and account takeover.

    • API-based behavioral AI
    • No-tuning anomaly detection
    • BEC + impersonation protection
    • Account takeover detection
    Free trial Free version
    Visit Abnormal AI → From Custom quote Mimecast Advanced Email Security vs Abnormal AI →

  5. 5Barracuda Email Protection

    7.8 4.4 (220)

    Best for SMBs and MSPs wanting broad, no-drama email protection plus backup from one familiar vendor.

    • Gateway + API-based protection
    • Impersonation + phishing protection
    • Automated incident response
    • Cloud-to-cloud M365 backup
    Free trial Free version
    Visit Barracuda Email Protection → From $5/user/mo Mimecast Advanced Email Security vs Barracuda Email Protection →

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More alternatives detail

Teams usually move off Mimecast Advanced Email Security for one of three reasons: pricing model, complexity, or a missing capability. The closest like-for-like options on the data we track are IRONSCALES, Proofpoint Email Protection, Abnormal AI.

Frequently asked questions

What is the best alternative to Mimecast Advanced Email Security?
IRONSCALES is the top-rated alternative in our data-weighted ranking (from $3.11/mailbox/mo).
Why do people switch from Mimecast Advanced Email Security?
Usually pricing model, complexity, or a missing capability. The table compares each alternative on exactly those axes.
Data as of June 1, 2026. Sources: mimecast.com, g2.com. Figures are pulled from public vendor and security data and refreshed automatically.