B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
46%
46% -- share of global emails classified as spam for global email volume (2026)
Nearly 46% of all emails sent globally are classified as spam according to Email Tool Tester.
- Source states 'nearly 46%'
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
46%
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
Email Tool Tester
Primary
Tier C
https://blogherald.com/blogging-news/when-a-beloved-feed-service-crosses-the-line-from-growth-hack-t… ↗
Source Article
When a beloved feed service crosses the line from growth hack to inbox invasion - The Blog Herald
This post was significantly updated in 2026 to reflect new information. An archived version from 2006 is available for reference here.
There is a moment in the life cycle of every growing company when someone in a meeting says, “We need to reach more people.” What follows that sentence determines wh…
Original Research
Email Tool Tester
· Original study ↗
Methodology
Cited from Email Tool Tester by The Blog Herald
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
global email volume: 46% share of global emails classified as spam. Source: Email Tool Tester (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/global-email-spam-share-2026
HTML Embed
<blockquote cite="https://lighthousedata.io/data/global-email-spam-share-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>46%</strong> -- share of global emails classified as spam for global email volume<br><small>Source: Email Tool Tester (2026) · <a href="https://lighthousedata.io/data/global-email-spam-share-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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