A breakdown of the 1.7K+ companies running Outlook Calendar.
Top industries
Professional and business services203
Health and wellness197
Information technology and services180
Education and training179
Industrial and manufacturing154
Financial services136
Construction and building126
Not for profit102
No industry recorded: 29
Company size
1–1088 (5%)
11–50174 (11%)
51–250421 (26%)
251–500245 (15%)
501–1,000143 (9%)
1,001–5,000265 (16%)
5,001–10,00092 (6%)
10,001+194 (12%)
Share of companies with a recorded size, by employees.
No size recorded: 87
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Frequently asked questions
About the Outlook Calendar data on this page.
How many companies use Outlook Calendar?
Firmable holds confirmed Outlook Calendar detections for 1,709 distinct companies, 204 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Outlook Calendar?
Malaysia's Largest Pre-Loved Luxury Trading & Sourcing Platform, ECHO Incorporated and Wintrust Bank are among the most prominent in the current set.
What industries use Outlook Calendar?
Professional and business services, health and wellness and information technology and services lead the set, across 19 industries in total.
What size companies use Outlook Calendar?
Adoption concentrates in the 51-250 employee band, across the companies whose size is recorded.
Where are Outlook Calendar users based?
The United States, Canada, Australia and the Philippines account for most detections, across 13 countries.
How current is this data?
204 companies were confirmed in the last 90 days. Last detection 13 October 2026.
