A breakdown of the 19K+ companies running FastMail.
Top industries
Information technology and services3.4K+
Professional and business services2.5K+
Art, sports and recreation2K+
Construction and building785
Education and training748
Media and telecommunications717
Industrial and manufacturing716
Hospitality and travel713
No industry recorded: 4K+
Company size
1–104,554 (62%)
11–501,877 (25%)
51–250725 (10%)
251–500109 (1%)
501–1,00021 (<1%)
1,001–5,00053 (1%)
5,001–10,00015 (<1%)
10,001+12 (<1%)
Share of companies with a recorded size, by employees.
No size recorded: 11K+
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Frequently asked questions
About the FastMail data on this page.
How many companies use FastMail?
Firmable holds confirmed FastMail detections for 19,192 distinct companies, 18,524 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use FastMail?
TOOP+TOOP Real Estate, AFCEA International and PhotoShelter are among the most prominent in the current set.
What industries use FastMail?
Information technology and services, professional and business services and art, sports and recreation lead the set, across 19 industries in total.
What size companies use FastMail?
Adoption concentrates in the 1-10 employee band, across the companies whose size is recorded.
Where are FastMail users based?
The United States, Australia, Canada and New Zealand account for most detections, across 13 countries.
How current is this data?
18,524 companies were confirmed in the last 90 days. Last detection 13 October 2026.
