B
Evidence Grade B
Graded
under review
Safe to Cite
Current
26%
26% -- email open rate increase for marketers using personalized subject lines (2026)
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
26%
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
50
Citation Chain
60
Independence
30
Methodology
45
Freshness
95
Source
Grazitti Interactive
Primary
Tier B
https://www.grazitti.com/ ↗
Source Article
Tools and Strategies to Master Sales and Marketing Automation
While executing every marketing campaign, the devil is in the details: everyday tasks, such as customer relationship management, email marketing tasks, etc., determine how successful your entire marketing campaign will be.
These tasks are some of the most critical tasks for marketing teams, yet they…
Original Research
Grazitti Interactive
· Original study ↗
Methodology
Source: Grazitti Interactive
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
marketers using personalized subject lines: 26% email open rate increase. Source: Grazitti Interactive (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/grazitti_interactive_email_open_rate
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<blockquote cite="https://lighthousedata.io/data/grazitti_interactive_email_open_rate" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>26%</strong> -- email open rate increase for marketers using personalized subject lines<br><small>Source: Grazitti Interactive (2026) · <a href="https://lighthousedata.io/data/grazitti_interactive_email_open_rate" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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