B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Dated
27.8%
27.8% -- email client market share for Gmail (2019)
Gmail had a 27.8% email client market share in 2019.
- Popularity is shared across all platforms for the same email client because it cannot be reliably distinguished
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
27.8%
Unit
Percentage
Data Vintage
2019
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.
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Sources (2)
Litmus
Primary
Tier B
https://sidemail.io/articles/dark-mode-in-html-email/ ↗
Source Article
How to make dark mode HTML email: everything you need to know.
Dark mode in HTML email
The new big trend in tech, dark mode, is coming to email. Learn how it works and how to make dark‑mode‑friendly HTML emails yourself.
With the new iOS 13 update, Apple Mail is getting a dark theme and becomes the first major email client that supports `prefers-color-scheme` C…
Also cited by
2026-09-29
Original Research
Litmus
· Original study ↗
Methodology
Shared across all Gmail platforms; Litmus 2019 email client market share
Methodology documented
Trend Over Time
| Period | Value | Change |
|---|---|---|
| 2012-02 | 8% | |
| 2014-03 | 11% | +37.5% |
| 2014-10 | 15% | +36.4% |
| 2014-11 | 15% | 0% |
| 2015 | 17% | +13.3% |
| 2015 | 17% | 0% |
| 2015-12 | 15% | -11.8% |
| 2019 (current) | 28% | +86.7% |
| 2019 (current) | 27.8% | -0.7% |
| 2019-11 | 26% | -6.5% |
| 2020 | 38% | +46.2% |
| 2020-07 | 38% | 0% |
| 2020-12 | 27% | -28.9% |
| 2021-03 | 29% | +7.4% |
| 2021-04 | 30% | +3.4% |
| 2024-06 | 35.99% | +20.0% |
| 2026 | 72.1% | +100.3% |
Segmentation
Industrymarketing
Cite this stat
Plain Text
Gmail: 27.8% email client market share. Source: Litmus (2019). Via Lighthouse Intelligence -- https://lighthousedata.io/data/gmail-market-share-2019
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<blockquote cite="https://lighthousedata.io/data/gmail-market-share-2019" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>27.8%</strong> -- email client market share for Gmail<br><small>Source: Litmus (2019) · <a href="https://lighthousedata.io/data/gmail-market-share-2019" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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