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.
2 Studies
5.5M Domains Scanned
6 Protocols
Q1 2026 Latest Data
Flagship Study
7 in 10 domains have no DMARC protection — largest email security study with 5.5 million domains
30.4% DMARC Adoption
12.8% Enforcement
56.0% SPF Adoption
0.0% DANE Adoption
Protocol Deep Dive
Microsoft 365 and Google Workspace appear in 33% of all SPF records — first-ever email sender market share by SPF include
19.6% Microsoft 365
13.6% Google Workspace
148,655 PermError Risk
53.6% Softfail Rate
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