A breakdown of the 5K+ companies running Sendmail.
Top industries
Information technology and services995
Professional and business services522
Education and training385
Art, sports and recreation350
Media and telecommunications342
Industrial and manufacturing316
Construction and building232
Hospitality and travel159
No industry recorded: 818
Company size
1–10618 (24%)
11–50708 (28%)
51–250582 (23%)
251–500186 (7%)
501–1,00075 (3%)
1,001–5,000189 (7%)
5,001–10,00067 (3%)
10,001+105 (4%)
Share of companies with a recorded size, by employees.
No size recorded: 2.5K+
Versions detected
10 versions across the confirmed companies. Counts are distinct companies seen running that version.
8.14.7\/8.14.7417
8.14.4\/8.14.4390
8.15.2\/8.15.2265
8.16.1\/8.16.1170
8.13.8\/8.13.8128
8.18.1\/8.18.1115
8.17.1\/8.17.141
8.15.2\/8.15.2\/Debian-22ubuntu338
8.17.1.9\/8.17.1.9\/Debian-2\+deb12u238
8.15.2\/8.14.737
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Frequently asked questions
About the Sendmail data on this page.
How many companies use Sendmail?
Firmable holds confirmed Sendmail detections for 5,031 distinct companies, 5,014 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Sendmail?
AireSpring, Vultr and 123NET are among the most prominent in the current set.
What industries use Sendmail?
Information technology and services, professional and business services and education and training lead the set, across 19 industries in total.
What size companies use Sendmail?
Adoption concentrates in the 11-50 employee band, across the companies whose size is recorded.
Where are Sendmail users based?
The United States, Canada, Japan and Australia account for most detections, across 13 countries.
How current is this data?
5,014 companies were confirmed in the last 90 days. Last detection 14 October 2026.
