B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
14%
14% -- email open rate increase for personalized newsletters vs generic newsletters (2026)
Personalized newsletters achieve a 14% higher open rate compared to generic newsletters.
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
14%
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
Propuls'Lead
Primary
Tier B
https://propulslead.com/post/copywriting-et-newsletters-la-cle-pour-fideliser-vos-clients-et-augment… ↗
Source Article
Copywriting et newsletters : la clé pour fidéliser vos clients et augmenter votre engagement
Accueil » Blog Tunnel de Vente » Tunnels de Vente » Copywriting et newsletters : la clé pour fidéliser vos clients et augmenter votre engagement
Vous avez enfin converti un prospect en client. Félicitations. Mais la vraie bataille commence maintenant. Garder cette personne engagée, la voir revenir, …
Original Research
Propuls'Lead
· Original study ↗
Methodology
Increase in open rates for personalized newsletters compared to generic newsletters.
Methodology documented
Segmentation
Industrymarketing
Cite this stat
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personalized newsletters vs generic newsletters: 14% email open rate increase. Source: Propuls'Lead (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/newsletter-personalization-open-rate-increase
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<blockquote cite="https://lighthousedata.io/data/newsletter-personalization-open-rate-increase" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>14%</strong> -- email open rate increase for personalized newsletters vs generic newsletters<br><small>Source: Propuls'Lead (2026) · <a href="https://lighthousedata.io/data/newsletter-personalization-open-rate-increase" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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