B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Dated
22%
22% -- email subscriber growth rate for Roots (clothing retailer) (2008)
Roots grew its email subscriber base by 22% during the first six weeks of a campaign that incorporated an in-store email sign-up component.
Attribution:
View source
Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
22%
Unit
Percentage
Data Vintage
2008
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
MarketingSherpa (case study cited by Analyze Your Customers blog)
Primary
Tier C
https://analyzeyourcustomers.wordpress.com/author/nancyarter/ ↗
Source Article
Nancy Arter
Original Research
MarketingSherpa (case study cited by Analyze Your Customers blog)
· Original study ↗
Methodology
Single-company case study; in-store email sign-up campaign
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Roots (clothing retailer): 22% email subscriber growth rate. Source: MarketingSherpa (case study cited by Analyze Your Customers blog) (2008). Via Lighthouse Intelligence -- https://lighthousedata.io/data/roots-subscriber-base-growth-22pct
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<blockquote cite="https://lighthousedata.io/data/roots-subscriber-base-growth-22pct" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>22%</strong> -- email subscriber growth rate for Roots (clothing retailer)<br><small>Source: MarketingSherpa (case study cited by Analyze Your Customers blog) (2008) · <a href="https://lighthousedata.io/data/roots-subscriber-base-growth-22pct" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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