B
Evidence Grade B
Graded
under review
Safe to Cite
Current
6.1%
6.1% -- rewards program enrollment lift for top-spending shoppers (2026)
Emails targeted to top-spending shoppers lifted rewards program enrollment by 6.1%.
- Shoppers kept their spend roughly flat afterward
Attribution:
View source
Lighthouse Research Team
Last verified:
·
How we verify data →
Source verified
Evidence graded
Value
6.1%
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
Harvard Business Review
Primary
Tier B
https://www.appcard.com/blogs/path-to-purchase-targeting ↗
Source Article
AppCard
Original Research
Harvard Business Review
· Original study ↗
Methodology
Cited Harvard Business Review study on rewards program targeting
Methodology documented
Segmentation
IndustryRetail
Channelmulti-channel
Cite this stat
Plain Text
top-spending shoppers: 6.1% rewards program enrollment lift. Source: Harvard Business Review (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/rewards-email-enrollment-lift-top-spenders
HTML Embed
<blockquote cite="https://lighthousedata.io/data/rewards-email-enrollment-lift-top-spenders" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>6.1%</strong> -- rewards program enrollment lift for top-spending shoppers<br><small>Source: Harvard Business Review (2026) · <a href="https://lighthousedata.io/data/rewards-email-enrollment-lift-top-spenders" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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