Top 11AI made for AI

The 11 best cybersecurity under $100/mo

The best provider in the Top 11 Top 11 Email Security Software priced under $100/mo is Sublime Security.

Why this answer

Filtered to entries whose published ceiling price (max published price band) is at or below $100/mo. Sorted cheapest first.

Showing all 7 matches. Top 11 publishes whatever the data supports — we don’t pad lists. See the full ranked Top 11 Email Security Software.

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

    —

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

    Full Sublime Security review · Compare: Sublime Security vs Microsoft Defender for Office 365 · Alternatives

  2. #2Microsoft Defender for Office 365(rank #4 in Top 11 Email Security Software)

    $2+/mo

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

    Full Microsoft Defender for Office 365 review · Alternatives

  3. #3Barracuda Email Protection(rank #5 in Top 11 Email Security Software)

    $3+/mo

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

    Full Barracuda Email Protection review · Alternatives

  4. #4Trend Micro Email and Collaboration Security(rank #7 in Top 11 Email Security Software)

    $3+/mo

    API protection across email and collaboration apps.

    Full Trend Micro Email and Collaboration Security review · Alternatives

  5. #5Sophos Email(rank #9 in Top 11 Email Security Software)

    $3+/mo

    Email folded into the Sophos Central single console.

    Full Sophos Email review · Alternatives

  6. #6Mimecast(rank #3 in Top 11 Email Security Software)

    $4+/mo

    Security bundled with archiving and outage continuity.

    Full Mimecast review · Alternatives

  7. #7Check Point Harmony Email & Collaboration(rank #10 in Top 11 Email Security Software)

    $4+/mo

    Inline API that blocks threats before delivery.

    Full Check Point Harmony Email & Collaboration review · Alternatives

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