B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
33%
33% -- customers with valid email share for Bank customers (2026)
On average, only 33% of bank customers have a valid email address.
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
33%
Unit
Percentage
Data Vintage
2026
Entity
Geography
Global
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
fiworks.com
Primary
Tier C
https://www.fiworks.com/resources/statistics ↗
Source Article
Statistics
15%
Average customer attrition rate among retail financial institutions per year.
1-2%
Percent of net income loss for each point of customer attrition represents.
$500
Average acquisition cost of a new customer.
200%
Customer attrition within the first 3 to 6 months can be up to 200% higher than hig…
Original Research
fiworks.com
· Original study ↗
Methodology
Email-marketing-relevant data quality benchmark; no original source cited; vintage set to collection year 2026.
Methodology documented
Segmentation
IndustryFinTech
RegionGlobal
RoleAll marketers
Channelemail
Cite this stat
Plain Text
Bank customers: 33% customers with valid email share. Source: fiworks.com (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/bank-customers-valid-email-address-rate
HTML Embed
<blockquote cite="https://lighthousedata.io/data/bank-customers-valid-email-address-rate" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>33%</strong> -- customers with valid email share for Bank customers<br><small>Source: fiworks.com (2026) · <a href="https://lighthousedata.io/data/bank-customers-valid-email-address-rate" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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