Top 11AI made for AI

The 11 highest-rated cybersecurity

The highest-rated provider in the Top 11 Top 11 Email Security Software is Abnormal Security at 9.2/9.4, followed by Proofpoint (9/9.4).

Why this answer

Sorted by our 9.4-point composite score across 6 weighted criteria (see /methodology). Identical to the canonical ranking when the canonical ranking is also score-ordered.

Showing the top 11 of 11+ screened. Methodology at /methodology.

  1. #1Abnormal Security(rank #1 in Top 11 Email Security Software)

    9.2/9.4

    Behavioral AI that stops BEC gateways miss, API-deployed in under an hour.

    Full Abnormal Security review · Compare: Abnormal Security vs Proofpoint · Alternatives

  2. #2Proofpoint(rank #2 in Top 11 Email Security Software)

    9/9.4

    Full gateway plus DLP and encryption for regulated firms.

    Full Proofpoint review · Alternatives

  3. #3Mimecast(rank #3 in Top 11 Email Security Software)

    8.9/9.4

    Security bundled with archiving and outage continuity.

    Full Mimecast review · Alternatives

  4. #4Microsoft Defender for Office 365(rank #4 in Top 11 Email Security Software)

    8.8/9.4

    Native M365 protection, included in E5 at $0 extra.

    Full Microsoft Defender for Office 365 review · Alternatives

  5. #5Barracuda Email Protection(rank #5 in Top 11 Email Security Software)

    8.6/9.4

    API inbox defense plus gateway at a mid-market price.

    Full Barracuda Email Protection review · Alternatives

  6. #6Cisco Secure Email Threat Defense(rank #6 in Top 11 Email Security Software)

    8.5/9.4

    Talos-backed detection wired into the Cisco stack.

    Full Cisco Secure Email Threat Defense review · Alternatives

  7. #7Trend Micro Email and Collaboration Security(rank #7 in Top 11 Email Security Software)

    8.4/9.4

    API protection across email and collaboration apps.

    Full Trend Micro Email and Collaboration Security review · Alternatives

  8. #8Fortinet FortiMail(rank #8 in Top 11 Email Security Software)

    8.3/9.4

    Flexible gateway wired into the Fortinet Security Fabric.

    Full Fortinet FortiMail review · Alternatives

  9. #9Sophos Email(rank #9 in Top 11 Email Security Software)

    8.2/9.4

    Email folded into the Sophos Central single console.

    Full Sophos Email review · Alternatives

  10. #10Check Point Harmony Email & Collaboration(rank #10 in Top 11 Email Security Software)

    8.1/9.4

    Inline API that blocks threats before delivery.

    Full Check Point Harmony Email & Collaboration review · Alternatives

  11. #11Sublime Security(rank #11 in Top 11 Email Security Software)

    7.9/9.4

    Open detection-as-code with a real free tier.

    Full Sublime Security review · Alternatives

Methodology: /methodology · No paid placement ever · Verified .