A breakdown of the 303 companies running Courier Mail Server.
Top industries
Information technology and services66
Industrial and manufacturing30
Professional and business services29
Education and training25
Media and telecommunications19
Art, sports and recreation18
Construction and building12
Retail trade9
No industry recorded: 50
Company size
1–1028 (17%)
11–5054 (32%)
51–25034 (20%)
251–50013 (8%)
501–1,00011 (7%)
1,001–5,00020 (12%)
5,001–10,0005 (3%)
10,001+2 (1%)
Share of companies with a recorded size, by employees.
No size recorded: 136
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Frequently asked questions
About the Courier Mail Server data on this page.
How many companies use Courier Mail Server?
Firmable holds confirmed Courier Mail Server detections for 303 distinct companies, 302 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Courier Mail Server?
Registrar Corp, Digicopy and Catholic Charities Of Archdiocese Of Miami are among the most prominent in the current set.
What industries use Courier Mail Server?
Information technology and services, industrial and manufacturing and professional and business services lead the set, across 19 industries in total.
What size companies use Courier Mail Server?
Adoption concentrates in the 11-50 employee band, across the companies whose size is recorded.
Where are Courier Mail Server users based?
The United States, Australia, Canada and Japan account for most detections, across 13 countries.
How current is this data?
302 companies were confirmed in the last 90 days. Last detection 14 October 2026.
