B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
16%
16% -- lifetime value lift for referral email subscribers (2025)
Referral subscribers have 16% higher lifetime value than non-referred subscribers according to a Wharton study.
Attribution:
View source
Lighthouse Research Team
Last verified:
·
How we verify data →
Source verified
Evidence graded
Value
16%
Unit
Percentage
Data Vintage
2025
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
Wharton
Primary
Tier C
https://www.excelohunt.com/blog/email-list-building-strategies-ecommerce/ ↗
Source Article
12 Email List Building Strategies That Actually Work for E-Commerce
12 Email List Building Strategies That Actually Work for E-Commerce
Your email list is the single most valuable asset your e-commerce store owns. Not your Instagram followers. Not your TikTok views. Your email list. Every subscriber you add is worth an average of $33-$40 in annual revenue according …
Original Research
Wharton
· Original study ↗
Methodology
Attributed to a Wharton study
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
referral email subscribers: 16% lifetime value lift. Source: Wharton (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/referral-subscriber-lifetime-value-2025
HTML Embed
<blockquote cite="https://lighthousedata.io/data/referral-subscriber-lifetime-value-2025" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>16%</strong> -- lifetime value lift for referral email subscribers<br><small>Source: Wharton (2025) · <a href="https://lighthousedata.io/data/referral-subscriber-lifetime-value-2025" 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.