B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
40%
40% -- increase in spam complaints without cadence control for Gen Z email subscribers (2025)
Failing to offer cadence control via a preference center to Gen Z subscribers can lead to 40% higher spam complaints.
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
40%
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
Campaign Monitor
Primary
Tier C
https://ecommerceboost.io/uncategorized/gen-z-newsletter/ ↗
Source Article
Mastering Your Gen Z Newsletter for Ecommerce
You send a campaign to your full list. Opens look decent. Clicks are uneven. Revenue comes mostly from older segments, while your younger subscribers browse, ignore, or unsubscribe after a few sends.
That pattern shows up constantly in ecommerce. The problem usually isn't that Gen Z hates email. The…
Original Research
Campaign Monitor
· Original study ↗
Methodology
Attributed to Campaign Monitor's Gen Z marketing guide
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Gen Z email subscribers: 40% increase in spam complaints without cadence control. Source: Campaign Monitor (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/gen-z-spam-complaints-no-cadence-control
HTML Embed
<blockquote cite="https://lighthousedata.io/data/gen-z-spam-complaints-no-cadence-control" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>40%</strong> -- increase in spam complaints without cadence control for Gen Z email subscribers<br><small>Source: Campaign Monitor (2025) · <a href="https://lighthousedata.io/data/gen-z-spam-complaints-no-cadence-control" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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