Research
Email security intelligence across U.S. education, public sector, and enterprise. Open data, sector benchmarks, and actionable analysis.
Sector Intelligence
Education & K-12 Email Security
SPF, DKIM, and DMARC adoption across 22,741 K-12 districts and 3,246 higher education institutions. State-level breakdowns and gateway detection.
Public Sector Email Security
Email authentication posture for municipalities, counties, state agencies, and special districts across all 50 states and D.C.
Cross-Sector DNS Comparison
Side-by-side comparison of email security across K-12, higher education, public sector, and for-profit organizations.
Market Intelligence
Provider & Gateway Intelligence
Email provider market share, gateway adoption trends, and security posture by vendor. Covers Google Workspace, Microsoft 365, Barracuda, Proofpoint, and more.
51-Jurisdiction State Rankings
All 50 states and D.C. ranked by SPF, DMARC, and email gateway adoption. Heatmaps and comparative analysis.
Research & Data
Full Registry — Academic Paper
Methodology and findings for the 801,359-entity ESI registry. 577,882 domains profiled across nonprofits, businesses, government, and education. National statistics and cross-sector benchmarks.
Email Security by Sector — Academic Paper
Segment-by-segment analysis across 8 sectors: IRS nonprofits, SAM.gov businesses, small businesses, SAM nonprofits, municipal government, state government, K-12, and higher education.
Education Dataset — Academic Paper
Deep dive on 20,021 K-12 districts and 3,171 higher education institutions. DMARC adoption, Google vs. Microsoft bifurcation, and population exposure estimates.
Education Dataset — Data Brief
For researchers: schema documentation, research angles, and access tiers for the ESI Registry dataset.
Regional Briefings
Texas Public Sector — DIR Briefing
Executive briefing customized for the Texas Department of Information Resources. Texas-specific email security metrics.