B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
30%
30% -- roi improvement for email list (2026)
Engagement-based email list segmentation can improve ROI by up to 30%.
- Maximum potential improvement ('tot 30%' / 'maximaal 30%')
Attribution:
View source
Lighthouse Research Team
Last verified:
·
How we verify data →
Source verified
Evidence graded
Value
30%
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.
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
70
Methodology
45
Freshness
95
Sources (4)
BillionVerify
Primary
Tier B
https://billionverify.com/nl/blog/what-is-email-list-quality ↗
Source Article
Wat Is E-maillijstkwaliteit? Verhoog ROI met 30% door…
Eén procentpunt stijging in je bouncepercentage kan de inboxplaatsing met wel 20% verlagen en spamfilteralarmen activeren die je afzenderreputatie maandenlang beschadigen. E-mailmarketeers verliezen regelmatig duizenden aan omzet doordat ze de verborgen kwaliteitsproblemen in hun lijsten over het ho…
Also cited by
harvey.ai
https://www.harvey.ai/
2026-08-18
chiefmarketer.com
https://www.chiefmarketer.com/
2026-08-18
designmodo.com
https://designmodo.com/
2026-08-18
Original Research
BillionVerify
· Original study ↗
Methodology
Based on engagement-based segmentation
Segmentation
Industrymarketing
Cite this stat
Plain Text
email list: 30% roi improvement. Source: BillionVerify (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/email-list-quality-ROI-improvement
HTML Embed
<blockquote cite="https://lighthousedata.io/data/email-list-quality-ROI-improvement" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>30%</strong> -- roi improvement for email list<br><small>Source: BillionVerify (2026) · <a href="https://lighthousedata.io/data/email-list-quality-ROI-improvement" 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.