B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
0.3%
0.3% -- spam rate threshold for Email bulk senders measured via Google Postmaster Tools (2025)
Google's bulk sender guidance requires senders to keep spam complaint rates reported in Postmaster Tools below 0.30%.
- Published threshold/guideline requiring spam rates to remain below 0.30%
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
0.3%
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
50
Freshness
95
Source
Google
Primary
Tier B
https://autocloz.com/blog/multi-channel-outbound-without-getting-banned ↗
Source Article
Multi-channel outbound without getting banned (LinkedIn, WhatsApp, SMS)
Multi-channel outbound without getting banned (LinkedIn, WhatsApp, SMS)
Four channels, four adjudicators, and three of them never send you a notice. What each one measures, how its refusal looks, and how to spot it in a day.
Getting banned on an outbound channel is usually a detection problem rather…
Original Research
Google
· Original study ↗
Methodology
Published threshold from Google's bulk sender guidance, quoted verbatim in the article; senders must keep Postmaster Tools spam complaint rates below 0.30%. No date given in article; vintage estimated from article context (references May 2025 and 2026 planning).
Methodology documented
Segmentation
Industrymarketing
Cite this stat
Plain Text
Email bulk senders measured via Google Postmaster Tools: 0.3% spam rate threshold. Source: Google (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/google-bulk-sender-spam-rate-threshold-0-30
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<blockquote cite="https://lighthousedata.io/data/google-bulk-sender-spam-rate-threshold-0-30" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>0.3%</strong> -- spam rate threshold for Email bulk senders measured via Google Postmaster Tools<br><small>Source: Google (2025) · <a href="https://lighthousedata.io/data/google-bulk-sender-spam-rate-threshold-0-30" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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