B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
49%
49% -- spam share of global email volume for Global email volume (2025)
Around 49% of global daily email volume is classified as spam.
- Estimate/approximate figure ('around 49%')
Attribution:
View source
Lighthouse Research Team
Last verified:
·
How we verify data →
Source verified
Evidence graded
Value
49%
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
verified.email
Primary
Tier C
https://verified.email/blog/email-verification/what-is-email-verification ↗
Source Article
What Is Email Verification And How Does It Work In 2026?
At minimum, verify new addresses as they enter your system and clean older segments periodically. Lists with high churn or long sales cycles benefit from more frequent checks.
What Is Email Verification and How Does It Work?
Email verification is a foundational part of list management. It doesn’t ch…
Original Research
verified.email
· Original study ↗
Methodology
Article states roughly 49% of global daily email volume is classified as spam; original source not named.
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Global email volume: 49% spam share of global email volume. Source: verified.email (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/spam-share-of-global-email-volume-2025
HTML Embed
<blockquote cite="https://lighthousedata.io/data/spam-share-of-global-email-volume-2025" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>49%</strong> -- spam share of global email volume for Global email volume<br><small>Source: verified.email (2025) · <a href="https://lighthousedata.io/data/spam-share-of-global-email-volume-2025" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
Share
Use this data in your work
Copy the citation, embed the widget, or explore thousands more verified marketing statistics -- all free.