Posts tagged: microsoft-365
Email Provider Market Share 2026: Who Sends the Mail
Microsoft 365 = 19.6%, Google Workspace = 13.6% of 3.08M SPF-enabled domains (DMARCguard scan, Mar 2026). The 2026 email provider market share, sourced.
Does Outlook Require DMARC? Yes, Since May 2025
Yes — Microsoft has required DMARC for Outlook senders since May 5, 2025. Set up DMARC for Microsoft 365 step by step with DNS examples.