B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
81%
81% -- dmarc adoption rate for S&P 500 (2026)
Red Sift estimates DMARC adoption among S&P 500 companies is around 81%.
- Secondary citation from Red Sift research
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Lighthouse Research Team
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Source verified
Evidence graded
Value
81%
Unit
Percentage
Data Vintage
2026
Entity
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Red Sift
Primary
Tier B
https://dmarcguard.io/blog/dmarc-enforcement-gap/ ↗
Source Article
DMARC Adoption Rate 2026: The 12.8% Enforcement Gap | DMARCguard
A DMARC record is not the same as DMARC protection. The DMARC adoption rate across the web has climbed past 30%, yet most of those records do nothing to stop spoofed mail — they only watch it. That single distinction is the whole story of the 2026 enforcement gap.
We measured it ourselves. In Februa…
Original Research
Red Sift
· Original study ↗
Methodology
Cited from Red Sift research
Methodology documented
Segmentation
Industrymarketing
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Plain Text
S&P 500: 81% dmarc adoption rate. Source: Red Sift (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/sp500-dmarc-adoption-2026
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<blockquote cite="https://lighthousedata.io/data/sp500-dmarc-adoption-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>81%</strong> -- dmarc adoption rate for S&P 500<br><small>Source: Red Sift (2026) · <a href="https://lighthousedata.io/data/sp500-dmarc-adoption-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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