Posts tagged: spf
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.
SPF Flattening: Fix Too Many DNS Lookups (2026)
148,655 domains exceed the SPF 10-lookup limit. Learn what SPF flattening is, when to use it, 4 safer alternatives, and step-by-step fixes. Check free.
SPF Softfail vs Hardfail: Which to Use?
53.6% of domains use SPF softfail, 40.2% use hardfail. Learn how each qualifier works, how DMARC changes the equation, and which to choose. Check your SPF free.
SPF PermError: How to Find and Fix It (2026 Guide)
SPF PermError breaks DMARC alignment and kills deliverability. Learn the 5 causes, step-by-step fixes, and platform-specific examples. Check your SPF free.
DMARC Fail: 7 Causes & How to Fix Each (2026 Guide)
DMARC failed? Fix it fast: 7 causes (SPF/DKIM misalignment, third-party senders, forwarding) with diagnose steps, fixes, and a free DMARC checker.