B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Dated
7%
7% -- email client market share for Outlook (2021-04)
Outlook accounted for 7% of worldwide email client market share as of April 1, 2021.
- automatic image blocking may cause over- or under-representation
Attribution:
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Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
7%
Unit
Percentage
Data Vintage
2021-04
Entity
Sample Size
1,150,000,000
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
95
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
emailclientmarketshare.com
Primary
Tier A
https://emailclientmarketshare.com/ ↗
Source Article
Email Client Market Share
#1 Apple iPhone 38% -0.89
#2 Gmail 30% +0.87
#3 Apple Mail 11% -0.34
#4 Outlook 7% +0.06
#5 Yahoo! Mail 5% -0.11
#6 Google Android 2% +0.19
#7 Apple iPad 1% -0.07
#8 Outlook.com 1% +0.02
#9 Samsung Mail 1% -0.14
#10 Windows Live Mail 0%
Email client market share
Email client usage worldwide, collect…
Original Research
emailclientmarketshare.com
· Original study ↗
Methodology
Collected from 1.15 billion email opens worldwide by Litmus Email Analytics.
Methodology documented
Trend Over Time
| Period | Value | Change |
|---|---|---|
| 2012-02 | 43% | |
| 2013 | 17% | -60.5% |
| 2014-03 | 14% | -17.6% |
| 2015 | 8% | -42.9% |
| 2015-12 | 6% | -25.0% |
| 2016 | 7% | +16.7% |
| 2016-11 | 6% | -14.3% |
| 2017-12 | 6% | 0% |
| 2018-05 | 8% | +33.3% |
| 2020 | 8% | 0% |
| 2021-03 | 7% | -12.5% |
| 2021-04 (current) | 7% | 0% |
Segmentation
Industrymarketing
Cite this stat
Plain Text
Outlook: 7% email client market share. Source: emailclientmarketshare.com (2021-04). Via Lighthouse Intelligence -- https://lighthousedata.io/data/outlook-email-market-share-april-2021
HTML Embed
<blockquote cite="https://lighthousedata.io/data/outlook-email-market-share-april-2021" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>7%</strong> -- email client market share for Outlook<br><small>Source: emailclientmarketshare.com (2021-04) · <a href="https://lighthousedata.io/data/outlook-email-market-share-april-2021" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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