B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
52.1%
52.1% -- dmarc adoption rate for email domains (2026)
DMARC adoption reached 52.1% of domains, up from 27.2% in 2023.
- The majority of these domains are configured at p=none, the weakest possible policy
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
52.1%
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
blog.automatedsalesmachine.com
Primary
Tier B
https://blog.automatedsalesmachine.com/email-deliverability-inbox-collapse/ ↗
Source Article
Email Deliverability 2026: The Honest 27% Inbox Crisis - The Conversion Feed
For most of the past decade, a failed email deliverability check was a minor inconvenience. As of 2026, email deliverability has reached a critical inflection point: non-compliant messages receive a permanent bounce code — they never arrive at all. For small businesses that rely on email to generate…
Original Research
blog.automatedsalesmachine.com
· Original study ↗
Methodology
Up from 27.2% in 2023; majority configured at p=none
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
email domains: 52.1% dmarc adoption rate. Source: blog.automatedsalesmachine.com (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/dmarc-adoption-growth-2023-2026
HTML Embed
<blockquote cite="https://lighthousedata.io/data/dmarc-adoption-growth-2023-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>52.1%</strong> -- dmarc adoption rate for email domains<br><small>Source: blog.automatedsalesmachine.com (2026) · <a href="https://lighthousedata.io/data/dmarc-adoption-growth-2023-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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