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

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

NoSpamProxy Protection: Email gateway that blocks spam, phishing and malware before inbox delivery, made. Built by NoSpamProxy.

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

Microsoft Defender for Office 365 is made by Microsoft. NoSpamProxy Protection is made by NoSpamProxy. 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 NoSpamProxy Protection 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.