B
Evidence Grade B
Graded
under review
Safe to Cite
Current
60%
60% -- inactive subscriber share of email list for permission-based email lists (2026)
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
60%
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
50
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
60secondmarketer.com
Primary
Tier C
https://60secondmarketer.com/list-churn-silent-campaign-killer/ ↗
Source Article
Email Marketing List Churn: The Silent Campaign Killer
Original Research
60secondmarketer.com
· Original study ↗
Methodology
Aggregate benchmark cited by 60 Second Marketer
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
permission-based email lists: 60% inactive subscriber share of email list. Source: 60secondmarketer.com (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/inactive-subscribers-permission-list-2026
HTML Embed
<blockquote cite="https://lighthousedata.io/data/inactive-subscribers-permission-list-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>60%</strong> -- inactive subscriber share of email list for permission-based email lists<br><small>Source: 60secondmarketer.com (2026) · <a href="https://lighthousedata.io/data/inactive-subscribers-permission-list-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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