B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
68%
68% -- share of subscribers joining email list for discount for e-commerce email subscribers (2025)
68% of subscribers join an email list specifically for a discount.
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
68%
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
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
Sumo
Primary
Tier B
https://webmedic.com/ecommerce-email-subject-lines ↗
Source Article
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Original Research
Sumo
· Original study ↗
Methodology
Sumo research on signup motivation; no year stated in article, vintage set to publication context (2025).
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
e-commerce email subscribers: 68% share of subscribers joining email list for discount. Source: Sumo (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/email-subscribers-join-for-discount-68
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<blockquote cite="https://lighthousedata.io/data/email-subscribers-join-for-discount-68" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>68%</strong> -- share of subscribers joining email list for discount for e-commerce email subscribers<br><small>Source: Sumo (2025) · <a href="https://lighthousedata.io/data/email-subscribers-join-for-discount-68" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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