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

8.5%

8.5% -- email response rate for outreach emails (cold outreach emails) (2021)

Name: Email Response Rate Statistics
Creator: Lighthouse Intelligence
Published: 2026-09-14

2021 · Backlinko

According to a survey by Backlinko cited in the text, only 8.5% of outreach emails received a response.

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Attribution: Backlinko View source

Lighthouse Research Team

Last verified: 2026-09-14 · How we verify data →

Source verified Evidence graded

Value

8.5%

Unit

Percentage

Data Vintage

2021

Entity

outreach emails (cold outreach emails)

Evidence Quality

Strong, reliable evidence

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

61/100 confidence

Single source - not yet corroborated

Score breakdown

Extraction

Source Trust

Citation Chain

Independence

Methodology

Freshness

Source

Backlinko Primary Tier C

https://www.seoactionblog.com/page/2/ ↗

Confidence: 48/100 Vintage: 2021 Channel: Wayback

Source Article

英文SEO实战派：不一样的Google SEO干货与资讯

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Original Research

Backlinko · Original study ↗

Methodology

Blog cites 'a Backlinko survey conducted last year' (去年) without stating the study date; the post appears just after the blog's Black Friday 2020 post, suggesting publication around 2021 and a survey conducted circa 2020-2021. This matches Backlinko's widely cited outreach email study finding an 8.5% average response rate.

Methodology documented

Segmentation

Industrymarketing

Cite this stat

Plain Text

outreach emails (cold outreach emails): 8.5% email response rate. Source: Backlinko (2021). Via Lighthouse Intelligence -- https://lighthousedata.io/data/backlinko-outreach-email-response-rate

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<blockquote cite="https://lighthousedata.io/data/backlinko-outreach-email-response-rate" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>8.5%</strong> -- email response rate for outreach emails (cold outreach emails)<br><small>Source: Backlinko (2021) · <a href="https://lighthousedata.io/data/backlinko-outreach-email-response-rate" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>

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