Attic M365 FREE vs Sublime Platform: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros and cons, compared head to head.
Attic M365 FREE is a commercial anti-phishing tool by Attic Security. Sublime Platform is a free detection engineering tool. Compare features, ratings, integrations, and community reviews side by side to find the best anti-phishing fit for your security stack. Independent and vendor-neutral: our scores and rankings are earned, never bought — sponsored placement is always labeled.
CST VerdictShort answer
Startup and SMB security teams protecting Microsoft 365 will benefit most from Attic M365 FREE because it stops AiTM phishing attacks that bypass MFA, the attack class traditional email filters miss entirely. The tool deploys in five minutes with no payment required, making it immediately useful for resource-constrained teams, and its real-time detection of fake login pages covers both NIST PR.AA and DE.CM functions simultaneously. Skip this if your organization needs protection beyond Microsoft 365 or runs a heterogeneous SaaS stack; Attic is deliberately focused on one platform and one threat vector. Security teams with limited budgets or those building custom email detection logic will find real value in Sublime Platform; its Message Query Language lets you write behavioral rules that catch BEC and credential phishing variants off-the-shelf tools miss. The free, open-source model means no licensing friction and full transparency into detection logic, critical for teams that need to audit or customize their email stack. Skip this if you need native integration with your existing EDR or require managed threat hunting; Sublime is detection-focused and requires your team to own the tuning.
