Research
Original data on email authentication adoption. Our flagship study scans 5.5 million domains from the complete Tranco Top Sites List, covering DMARC, SPF, DKIM, MTA-STS, BIMI, and DANE.
7 in 10 domains have no DMARC protection — largest email security study with 5.5 million domains
Microsoft 365 and Google Workspace appear in 33% of all SPF records — first-ever email sender market share by SPF include
Analysis of .gov domains examining CISA mandate impact on DMARC deployment patterns
Analysis of .edu domains examining impact of alumni email forwarding on DMARC deployment
Analysis of Fortune 500 domains examining BIMI deployment patterns and brand visibility drivers
MTA-STS at 0.3% — 101x lower than DMARC despite solving email-in-transit attacks
0.4% BIMI adoption — brand logos in email inboxes remain rare even at 5.5 million domain scale
30 domains deploy DANE across 5.5 million scanned — the protocol that never was
Monitor Your Domains
Get continuous email authentication monitoring, aggregate report parsing, and actionable remediation insights.
Start Free