Share of companies with a recorded size, by employees.
No size recorded: 41
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Frequently asked questions
About the MailUp data on this page.
How many companies use MailUp?
Firmable holds confirmed MailUp detections for 362 distinct companies, 322 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use MailUp?
LeasePlan, Guggenheim Museum and Hellman & Friedman are among the most prominent in the current set.
What industries use MailUp?
Industrial and manufacturing, professional and business services and information technology and services lead the set, across 19 industries in total.
What size companies use MailUp?
Adoption concentrates in the 51-250 employee band, across the companies whose size is recorded.
Where are MailUp users based?
The United States, Australia, Canada and Singapore account for most detections, across 13 countries.
How current is this data?
322 companies were confirmed in the last 90 days. Last detection 13 October 2026.
