B
Evidence Grade B
Graded
under review
Safe to Cite
Current
22%
22% -- open rate lift for AI-generated subject lines (2026)
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
22%
Unit
Percentage
Data Vintage
2026
Entity
Geography
Global
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
Knak
Primary
Tier C
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Source Article
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Original Research
Knak
· Original study ↗
Methodology
Cited from Knak Email Creation & AI Statistics, 2026
Methodology documented
Segmentation
IndustryFinTech
RegionGlobal
RoleAll marketers
Channelemail
Cite this stat
Plain Text
AI-generated subject lines: 22% open rate lift. Source: Knak (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/ai-subject-line-open-lift-2026
HTML Embed
<blockquote cite="https://lighthousedata.io/data/ai-subject-line-open-lift-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>22%</strong> -- open rate lift for AI-generated subject lines<br><small>Source: Knak (2026) · <a href="https://lighthousedata.io/data/ai-subject-line-open-lift-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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