B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
8%
8% -- spam flag rate for AI-written email (2026)
AI-written emails have an approximate 8% spam-flag rate.
- Approximate figure (~8%) compared against ~3% for human-written emails
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
8%
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
Ziellab
Primary
Tier C
http://alleyoop.io/ai-sdr-or-repackaged-spam/ ↗
Source Article
AI SDR or Repackaged Spam? 7 Warning Signs Before You Buy the Robot
Original Research
Ziellab
· Original study ↗
Methodology
Per Ziellab, 2026; human-written baseline 3%.
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
AI-written email: 8% spam flag rate. Source: Ziellab (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/ai-email-spam-flag-rate
HTML Embed
<blockquote cite="https://lighthousedata.io/data/ai-email-spam-flag-rate" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>8%</strong> -- spam flag rate for AI-written email<br><small>Source: Ziellab (2026) · <a href="https://lighthousedata.io/data/ai-email-spam-flag-rate" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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