A breakdown of the 19 companies running Rockliffe MailSite.
Top industries
Education and training4
Industrial and manufacturing3
Information technology and services3
Art, sports and recreation2
Media and telecommunications2
Professional and business services2
Construction and building1
Government and public services1
Company size
11–504 (24%)
51–2507 (41%)
251–5002 (12%)
501–1,0002 (12%)
1,001–5,0002 (12%)
Share of companies with a recorded size, by employees.
No size recorded: 2
Versions detected
5 versions across the confirmed companies. Counts are distinct companies seen running that version.
10.4.0.08
10.3.0.22
10.3.0.01
9.5.4.121
9.5.4.31
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Frequently asked questions
About the Rockliffe MailSite data on this page.
How many companies use Rockliffe MailSite?
Firmable holds confirmed Rockliffe MailSite detections for 19 distinct companies, 19 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Rockliffe MailSite?
National Science Teaching Association, Milwaukee Pc and Clarenceville School District are among the most prominent in the current set.
What industries use Rockliffe MailSite?
Education and training, industrial and manufacturing and information technology and services lead the set, across 12 industries in total.
What size companies use Rockliffe MailSite?
Adoption concentrates in the 51-250 employee band, across the companies whose size is recorded.
Where are Rockliffe MailSite users based?
The United States, Australia, Canada and Japan account for most detections, across 7 countries.
How current is this data?
19 companies were confirmed in the last 90 days. Last detection 14 October 2026.
