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

14.3%

14.3% -- email open rate increase for segmentation devotees (2021)

Name: Email Open Rate Increase Statistics
Creator: Lighthouse Intelligence
Published: 2026-08-08

2021 · mailfloss.storychief.io

Marketers who use segmentation experienced a 14.3% increase in email open rates according to MailChimp.

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Attribution: mailfloss.storychief.io View source

Lighthouse Research Team

Last verified: 2026-08-08 · How we verify data →

Source verified Evidence graded

Value

14.3%

Unit

Percentage

Data Vintage

2021

Entity

segmentation devotees

Geography

Global

Evidence Quality

Strong, reliable evidence

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

66/100 confidence

Score breakdown

Extraction

Source Trust

Citation Chain

Independence

Methodology

Freshness

Sources (5)

mailfloss.storychief.io Primary Tier B

https://mailfloss.storychief.io/ecommerce-email-marketing ↗

Confidence: 51/100 Vintage: 2021 Channel: Common Crawl

Source Article

Ecommerce Email Marketing Guide for 2021

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amraandelma.com https://www.amraandelma.com/

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Original Research

mailfloss.storychief.io · Original study ↗

Methodology

Source: MailChimp

Segmentation

IndustryeCommerce RegionGlobal RoleAll marketers Channelemail

Cite this stat

Plain Text

segmentation devotees: 14.3% email open rate increase. Source: mailfloss.storychief.io (2021). Via Lighthouse Intelligence -- https://lighthousedata.io/data/segmentation-open-rate-increase

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<blockquote cite="https://lighthousedata.io/data/segmentation-open-rate-increase" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>14.3%</strong> -- email open rate increase for segmentation devotees<br><small>Source: mailfloss.storychief.io (2021) · <a href="https://lighthousedata.io/data/segmentation-open-rate-increase" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>

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