The 11 best cybersecurity for msps

The best cybersecurity for msps is Abnormal Security: Behavioral AI that stops BEC gateways miss, API-deployed in under an hour.

Why this answer

Filtered to entries whose "best for" criterion explicitly mentions msps or whose verdict and integrations strongly signal fit. Ranked by methodology score, not segment match strength.

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

  1. #1Abnormal Security(rank #1 in Abnormal Security vs Proofpoint vs Mimecast: 11 Best Email Security Software 2026)

    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 Abnormal Security vs Proofpoint vs Mimecast: 11 Best Email Security Software 2026)

    9/9.4

    Full gateway plus DLP and encryption for regulated firms.

    Full Proofpoint review · Alternatives

  3. #3Mimecast(rank #3 in Abnormal Security vs Proofpoint vs Mimecast: 11 Best Email Security Software 2026)

    8.9/9.4

    Security bundled with archiving and outage continuity.

    Full Mimecast review · Alternatives

  4. #4Microsoft Defender for Office 365(rank #4 in Abnormal Security vs Proofpoint vs Mimecast: 11 Best Email Security Software 2026)

    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 Abnormal Security vs Proofpoint vs Mimecast: 11 Best Email Security Software 2026)

    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 Abnormal Security vs Proofpoint vs Mimecast: 11 Best Email Security Software 2026)

    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 Abnormal Security vs Proofpoint vs Mimecast: 11 Best Email Security Software 2026)

    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 Abnormal Security vs Proofpoint vs Mimecast: 11 Best Email Security Software 2026)

    8.3/9.4

    Flexible gateway wired into the Fortinet Security Fabric.

    Full Fortinet FortiMail review · Alternatives

  9. #9Sophos Email(rank #9 in Abnormal Security vs Proofpoint vs Mimecast: 11 Best Email Security Software 2026)

    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 Abnormal Security vs Proofpoint vs Mimecast: 11 Best Email Security Software 2026)

    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 Abnormal Security vs Proofpoint vs Mimecast: 11 Best Email Security Software 2026)

    —

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

    Full Sublime Security review · Alternatives

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