B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
0.1%
0.1% -- spam complaint rate for cold email programs (2025)
A healthy cold email program keeps its spam complaint rate under 0.10%.
- Target benchmark for healthy programs is under 0.10%
Attribution:
View source
Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
0.1%
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
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
ColdMailer
Primary
Tier B
https://coldmailer.ai/blog/how-to-test-email-deliverability ↗
Source Article
How to Test Email Deliverability Before You Send
Short answer: Test email deliverability in three passes before any cold campaign. Scan the copy for spam trigger words, confirm SPF, DKIM, and DMARC pass on your sending domain, then send a seed test to real Gmail, Outlook, and Yahoo inboxes and note where each lands. Do all three every time you cha…
Original Research
ColdMailer
· Original study ↗
Methodology
Vendor benchmark guidance
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
cold email programs: 0.1% spam complaint rate. Source: ColdMailer (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/cold-email-spam-complaint-benchmark
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<blockquote cite="https://lighthousedata.io/data/cold-email-spam-complaint-benchmark" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>0.1%</strong> -- spam complaint rate for cold email programs<br><small>Source: ColdMailer (2025) · <a href="https://lighthousedata.io/data/cold-email-spam-complaint-benchmark" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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