B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Dated
3%
3% -- email client market share for Outlook.com (2018-05)
Outlook.com accounted for a 3% share of email client opens worldwide in May 2018.
- Image blocking may cause over- or under-representation of some email clients and mobile devices.
Attribution:
View source
Lighthouse Research Team
Last verified:
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Source verified
Evidence graded
Value
3%
Unit
Percentage
Data Vintage
2018-05
Entity
Sample Size
1,020,000,000
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 29% +0.02
#2 Gmail 26% +1.21
#3 Apple iPad 9% -0.56
#4 Apple Mail 8% -0.3
#5 Outlook 8% +0.02
#6 Samsung Mail 5% +0.13
#7 Yahoo! Mail 3% +0.16
#8 Outlook.com 3% -0.29
#9 Google Android 3%
#10 Windows Live Mail 1% -0.05
Email client market share
Email client usage worldwide, collected…
Original Research
emailclientmarketshare.com
· Original study ↗
Methodology
Collected from 1.02 billion email opens worldwide by Litmus Email Analytics.
Methodology documented
Trend Over Time
| Period | Value | Change |
|---|---|---|
| 2014-03 | 6% | |
| 2014-10 | 5% | -16.7% |
| 2014-11 | 5% | 0% |
| 2015 | 5% | 0% |
| 2015-06 | 4% | -20.0% |
| 2015-07 | 4% | 0% |
| 2016 | 5% | +25.0% |
| 2017-12 | 4% | -20.0% |
| 2018-05 (current) | 3% | -25.0% |
| 2019-10 | 2% | -33.3% |
| 2026-05 | 0.38% | -81.0% |
Segmentation
Industrymarketing
Cite this stat
Plain Text
Outlook.com: 3% email client market share. Source: emailclientmarketshare.com (2018-05). Via Lighthouse Intelligence -- https://lighthousedata.io/data/outlook-com-email-client-market-share-may-2018
HTML Embed
<blockquote cite="https://lighthousedata.io/data/outlook-com-email-client-market-share-may-2018" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>3%</strong> -- email client market share for Outlook.com<br><small>Source: emailclientmarketshare.com (2018-05) · <a href="https://lighthousedata.io/data/outlook-com-email-client-market-share-may-2018" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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