B Evidence Grade B Graded accuracy verified by the review judge Safe to Cite Dated

93%

93% -- percentage of email spam for email in the Netherlands (January 2009)

Name: Percentage Of Email Spam Statistics
Creator: Lighthouse Intelligence
Published: 2026-07-05

January 2009 · CleanPort

In January 2009, the percentage of spam in email traffic was 93%.

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Attribution: CleanPort View source

Lighthouse Research Team

Last verified: 2026-07-05 · How we verify data →

Source verified Evidence graded

Value

93%

Unit

Percentage

Data Vintage

January 2009

Entity

email in the Netherlands

Evidence Quality

Strong, reliable evidence

Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.

63/100 confidence

Single source - not yet corroborated

Score breakdown

Extraction

Source Trust

Citation Chain

Independence

Methodology

Freshness

Source

CleanPort Primary Tier A

https://www.computable.nl/2009/02/02/percentage-virussen-in-e-mail-in-januari-2009-op-laagste-punt-o… ↗

Confidence: 64/100 Vintage: January 2009 Channel: Cc Extraction

Source Article

Percentage virussen in e-mail in januari 2009 op laagste punt ooit - Computable.nl

Het percentage virussen in e-mail in Nederland is in januari 2009 met 0,01% op het laagste niveau ooit uitgekomen. De daling van het aantal virussen in e-mail naar een laag niveau zette december 2008 al in, maar niet eerder zakte het viruspercentage onder de 0,1 %. Dit meldt CleanPort, een internati…

Original Research

CleanPort · Original study ↗

Methodology

Reported by CleanPort, an international company providing Managed Security services.

Methodology documented

Segmentation

Channelcommon_crawl

Cite this stat

Plain Text

email in the Netherlands: 93% percentage of email spam. Source: CleanPort (January 2009). Via Lighthouse Intelligence -- https://lighthousedata.io/data/percentage-spam-januari-2009

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<blockquote cite="https://lighthousedata.io/data/percentage-spam-januari-2009" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>93%</strong> -- percentage of email spam for email in the Netherlands<br><small>Source: CleanPort (January 2009) · <a href="https://lighthousedata.io/data/percentage-spam-januari-2009" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>

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