A breakdown of the 45K+ companies running Postmark.
Top industries
Information technology and services7.1K+
Professional and business services6.6K+
Art, sports and recreation3.1K+
Education and training3K+
Construction and building2.9K+
Financial services2.9K+
Industrial and manufacturing2.9K+
Health and wellness2.3K+
No industry recorded: 4.4K+
Company size
1–1010,942 (35%)
11–509,480 (30%)
51–2507,356 (24%)
251–5002,038 (7%)
501–1,000497 (2%)
1,001–5,000679 (2%)
5,001–10,00099 (<1%)
10,001+127 (<1%)
Share of companies with a recorded size, by employees.
No size recorded: 14K+
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Frequently asked questions
About the Postmark data on this page.
How many companies use Postmark?
Firmable holds confirmed Postmark detections for 45,583 distinct companies, 44,967 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Postmark?
McGrathNicol, Sorren and Forge Global, Inc. are among the most prominent in the current set.
What industries use Postmark?
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 Postmark?
Adoption concentrates in the 1-10 employee band, across the companies whose size is recorded.
Where are Postmark users based?
The United States, Australia, Canada and the Philippines account for most detections, across 13 countries.
How current is this data?
44,967 companies were confirmed in the last 90 days. Last detection 13 October 2026.
