A breakdown of the 1K+ companies running Mailplug.
Top industries
Industrial and manufacturing205
Professional and business services109
Information technology and services98
Retail trade73
Construction and building69
Education and training69
Art, sports and recreation58
Health and wellness22
No industry recorded: 161
Company size
1–10125 (42%)
11–50115 (39%)
51–25031 (10%)
251–50010 (3%)
501–1,0006 (2%)
1,001–5,0008 (3%)
5,001–10,0002 (1%)
Share of companies with a recorded size, by employees.
No size recorded: 711
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Frequently asked questions
About the Mailplug data on this page.
How many companies use Mailplug?
Firmable holds confirmed Mailplug detections for 1,008 distinct companies, 1,008 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Mailplug?
American Association for Cancer Research, Penetron International and PARMI Co.,Ltd. are among the most prominent in the current set.
What industries use Mailplug?
Industrial and manufacturing, professional and business services and information technology and services lead the set, across 19 industries in total.
What size companies use Mailplug?
Adoption concentrates in the 1-10 employee band, across the companies whose size is recorded.
Where are Mailplug users based?
South Korea, the United States, Japan and Vietnam account for most detections, across 13 countries.
How current is this data?
1,008 companies were confirmed in the last 90 days. Last detection 13 October 2026.
