B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Aging
10.5%
10.5% -- email spam folder placement rate for Global email volume (15 major ESPs benchmark) (2024)
Around 10.5% of emails went straight to spam folders according to a 2024 benchmark across 15 major ESPs.
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
10.5%
Unit
Percentage
Data Vintage
2024
Entity
Sample Size
15
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
Reported as part of the same 2024 benchmark across 15 major ESPs in which average inbox deliverability was 83.1%.
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Global email volume (15 major ESPs benchmark): 10.5% email spam folder placement rate. Source: verified.email (2024). Via Lighthouse Intelligence -- https://lighthousedata.io/data/emails-landing-in-spam-2024
HTML Embed
<blockquote cite="https://lighthousedata.io/data/emails-landing-in-spam-2024" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>10.5%</strong> -- email spam folder placement rate for Global email volume (15 major ESPs benchmark)<br><small>Source: verified.email (2024) · <a href="https://lighthousedata.io/data/emails-landing-in-spam-2024" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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