B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
72.6%
72.6% -- dmarc adoption rate for domains 10+ years old (2026-08)
72.6% of domains 10+ years old published a DMARC record.
- Sample frame over-represents B2B and commercially-mailed domains observed on commercial mailing lists, not a random sample of the DNS
- Registration age is known for 208,711 of 272,446 domains (76.6% coverage); rows with unknown age excluded
Attribution:
View source
Lighthouse Research Team
Last verified:
·
How we verify data →
Source verified
Evidence graded
Value
72.6%
Unit
Percentage
Data Vintage
2026-08
Entity
Sample Size
142,072
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
95
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
bouncezero.io
Primary
Tier A
https://bouncezero.io/inbox-infrastructure-report-2026 ↗
Source Article
The Inbox Infrastructure Report 2026 - a 272,446-Domain Email Authentication Census | BounceZero Research
BounceZero Research - Flagship Report
What 272,446 domains reveal about the state of email authentication. Snapshot, August 2026 - every claim below is independently verifiable with dig
.
By Ayoub Lebda, Founder
|August 2026
|Data: 2026-02-15 > 2026-08-05
Sample frame, stated plainly: these are doma…
Original Research
bouncezero.io
· Original study ↗
Methodology
Domains with known registration age 10+ years
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
domains 10+ years old: 72.6% dmarc adoption rate. Source: bouncezero.io (2026-08). Via Lighthouse Intelligence -- https://lighthousedata.io/data/dmarc-aged-domains-2026
HTML Embed
<blockquote cite="https://lighthousedata.io/data/dmarc-aged-domains-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>72.6%</strong> -- dmarc adoption rate for domains 10+ years old<br><small>Source: bouncezero.io (2026-08) · <a href="https://lighthousedata.io/data/dmarc-aged-domains-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
Share
Related Statistics
Use this data in your work
Copy the citation, embed the widget, or explore thousands more verified marketing statistics -- all free.