A breakdown of the 405 companies running Outlook.com.
Top industries
Education and training75
Professional and business services42
Industrial and manufacturing37
Information technology and services31
Construction and building30
Financial services21
Health and wellness19
Art, sports and recreation17
No industry recorded: 39
Company size
1–1066 (22%)
11–5072 (24%)
51–25073 (25%)
251–50030 (10%)
501–1,00017 (6%)
1,001–5,00025 (8%)
5,001–10,0008 (3%)
10,001+5 (2%)
Share of companies with a recorded size, by employees.
No size recorded: 109
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Frequently asked questions
About the Outlook.com data on this page.
How many companies use Outlook.com?
Firmable holds confirmed Outlook.com detections for 405 distinct companies, 342 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Outlook.com?
Bluefield State University, Oyster River School District and DEMCO are among the most prominent in the current set.
What industries use Outlook.com?
Education and training, professional and business services and industrial and manufacturing lead the set, across 19 industries in total.
What size companies use Outlook.com?
Adoption concentrates in the 51-250 employee band, across the companies whose size is recorded.
Where are Outlook.com users based?
The United States, Australia, Canada and Indonesia account for most detections, across 13 countries.
How current is this data?
342 companies were confirmed in the last 90 days. Last detection 13 October 2026.
