Free cybersecurity in the Top 11

1 provider in the Top 11 Abnormal Security vs Proofpoint vs Mimecast: 11 Best Email Security Software 2026 offers a free tier; the most credible is Sublime Security.

Why this answer

Filtered to entries with a published free tier (not just a free trial). When the pricing page is ambiguous we err conservative — paid-only by default.

Showing all 1 matches. Top 11 publishes whatever the data supports — we don’t pad lists. See the full ranked Abnormal Security vs Proofpoint vs Mimecast: 11 Best Email Security Software 2026.

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

    Free tier

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

    Full Sublime Security review · Alternatives

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