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

40%

40% -- 12 week retention rate benchmark for Email newsletters (Letterhead client benchmark) (2025)

Name: 12 Week Retention Rate Benchmark Statistics
Creator: Lighthouse Intelligence
Published: 2026-09-17

2025 · Letterhead

A 12-week retention rate below 40% for email newsletters indicates acquiring subscribers through a 'leaky bucket'.

Stated as an industry rule of thumb / practitioner benchmark rather than a formal empirical survey

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Attribution: Letterhead View source

Lighthouse Research Team

Last verified: 2026-09-17 · How we verify data →

Source verified Evidence graded

Value

40%

Unit

Percentage

Data Vintage

2025

Entity

Email newsletters (Letterhead client benchmark)

Evidence Quality

Strong, reliable evidence

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

60/100 confidence

Single source - not yet corroborated

Score breakdown

Extraction

Source Trust

Citation Chain

Independence

Methodology

Freshness

Source

Letterhead Primary Tier B

https://www.tryletterhead.com/blog/newsletter-vs-content-product.html ↗

Confidence: 55/100 Vintage: 2025 Channel: Deep Crawl

Source Article

Three things that separate a newsletter from a content product

Strategy Three things that separate a newsletter from a content product Most teams running a newsletter are running a recurring email. A few are running a content product. The work looks the same on the surface — there’s a schedule, a draft, a send — but the second kind compounds and the first kind …

Original Research

Letterhead · Original study ↗

Methodology

Practitioner benchmark stated by Cameron Smith, Head of Revenue at Letterhead: 12-week newsletter retention below 40% indicates 'leaky bucket' acquisition. Derived from Letterhead Studio work with publishers, agencies, and marketing teams; no formal survey methodology published. No calendar date stated; publication year used as vintage.

Methodology documented

Segmentation

Industrymarketing

Cite this stat

Plain Text

Email newsletters (Letterhead client benchmark): 40% 12 week retention rate benchmark. Source: Letterhead (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/newsletter-12-week-retention-40-percent-benchmark

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<blockquote cite="https://lighthousedata.io/data/newsletter-12-week-retention-40-percent-benchmark" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>40%</strong> -- 12 week retention rate benchmark for Email newsletters (Letterhead client benchmark)<br><small>Source: Letterhead (2025) · <a href="https://lighthousedata.io/data/newsletter-12-week-retention-40-percent-benchmark" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>

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