Microsoft Defender for Office 365 vs SpamTitan for Office 365: side-by-side comparison (2026)

Microsoft Defender for Office 365: Email and collaboration security for Microsoft 365 environments. Built by Microsoft.

SpamTitan for Office 365: Email security layer for M365 with anti-phishing, sandboxing, and DLP. Built by SpamTitan (TitanHQ).

The table above shows where their features, integrations, deployment and company size fit differ.

Microsoft Defender for Office 365 is made by Microsoft. SpamTitan for Office 365 is made by SpamTitan (TitanHQ). The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Often, yes. Microsoft Defender for Office 365 and SpamTitan for Office 365 are both Email Security Platforms products, and both cover Microsoft 365. Use the table above to see where features, deployment and company size fit differ.