B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
32%
32% -- share of domains with dmarc policy none for YC W26 batch companies (2026-03)
32% of scanned YC W26 batch company domains had a DMARC policy of p=none (monitor only).
Attribution:
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Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
32%
Unit
Percentage
Data Vintage
2026-03
Entity
Sample Size
200
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
Wraps
Primary
Tier B
https://wraps.dev/blog/yc-w26-email-security-audit ↗
Source Article
We Graded 200 YC W26 Companies on Email Security | Wraps
How we graded
No curve. No bonus points. Either you have SPF, DKIM, and DMARC configured and enforcing, or you don't.
| Grade | What it means |
|---|---|
| A | SPF + DKIM + DMARC enforcing (quarantine or reject) |
| B | All three records present, but DMARC not enforcing (policy=none) |
| C | Missing…
Original Research
Wraps
· Original study ↗
Methodology
Public DNS queries of 200 YC W26 company domains
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
YC W26 batch companies: 32% share of domains with dmarc policy none. Source: Wraps (2026-03). Via Lighthouse Intelligence -- https://lighthousedata.io/data/yc-w26-dmarc-pnone-2026
HTML Embed
<blockquote cite="https://lighthousedata.io/data/yc-w26-dmarc-pnone-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>32%</strong> -- share of domains with dmarc policy none for YC W26 batch companies<br><small>Source: Wraps (2026-03) · <a href="https://lighthousedata.io/data/yc-w26-dmarc-pnone-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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