B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
10.5%
10.5% -- spam rate for global marketing emails (2026)
According to EmailTooltester's 15-ESP benchmark, 10.5% of global marketing emails land in the spam folder.
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
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
95
Source Trust
50
Citation Chain
90
Independence
30
Methodology
45
Freshness
79
Source
Prospeo
Primary
Tier A
https://prospeo.io/s/email-deliverability-statistics ↗
Source Article
Email Deliverability Statistics 2026: Benchmarks & Data
Email Deliverability Statistics: What the 2026 Data Actually Says
Every email that lands in spam is a conversation that never happens. Send 10,000 emails at 98% inbox placement and you reach 9,800 people. Drop to 85% and you're at 8,500 - 1,300 missed inbox views, roughly 26 lost conversions at a 2%…
Original Research
Prospeo
· Original study ↗
Methodology
Per EmailTooltester's 15-ESP benchmark.
Methodology documented
Segmentation
Channelrss_feed
Cite this stat
Plain Text
global marketing emails: 10.5% spam rate. Source: Prospeo (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/email-spam-rate-2026
HTML Embed
<blockquote cite="https://lighthousedata.io/data/email-spam-rate-2026" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>10.5%</strong> -- spam rate for global marketing emails<br><small>Source: Prospeo (2026) · <a href="https://lighthousedata.io/data/email-spam-rate-2026" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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