B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
78%
78% -- dmarc record adoption rate for Global email senders (2026)
According to Valimail's 2026 DMARC Report cited in the article, 78% of tracked records have DMARC adoption.
- Secondary citation from Valimail's 2026 report noted by author as needing primary source verification
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
78%
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
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Valimail
Primary
Tier C
https://deathtocoldemails.com/cold-email-deliverability-engineering ↗
Source Article
Cold Email Deliverability Is Now an Engineering Problem | Death to Cold Emails
Deliverability Engineering
Cold Email Deliverability Is Now an Engineering Problem
By Peter Korpak · 16 min read · April 2026
Direct answer: Between February 2024 (Google + Yahoo) and May 2025 (Microsoft), the bulk-sender bar was raised three times. Sending 5,000 or more messages per day to personal…
Original Research
Valimail
· Original study ↗
Methodology
DMARC adoption share of email records per Valimail's 2026 DMARC Report, as cited by this article. Author notes the figure should be verified against the Valimail primary source before quoting.
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Global email senders: 78% dmarc record adoption rate. Source: Valimail (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/valimail-dmarc-adoption-2026
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<blockquote cite="https://lighthousedata.io/data/valimail-dmarc-adoption-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>78%</strong> -- dmarc record adoption rate for Global email senders<br><small>Source: Valimail (2026) · <a href="https://lighthousedata.io/data/valimail-dmarc-adoption-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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