A breakdown of the 12 companies running DMARC Manager.
Top industries
Education and training3
Government and public services2
Industrial and manufacturing2
Information technology and services2
Transport2
Professional and business services1
Company size
1–101 (8%)
51–2503 (25%)
251–5001 (8%)
1,001–5,0002 (17%)
5,001–10,0002 (17%)
10,001+3 (25%)
Share of companies with a recorded size, by employees.
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Frequently asked questions
About the DMARC Manager data on this page.
How many companies use DMARC Manager?
Firmable holds confirmed DMARC Manager detections for 12 distinct companies, 12 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use DMARC Manager?
Leiden University - Faculty of Humanities, Spring GDS - Global and International Crisis Group are among the most prominent in the current set.
What industries use DMARC Manager?
Education and training, government and public services and industrial and manufacturing lead the set, across 9 industries in total.
What size companies use DMARC Manager?
Adoption concentrates in the 51-250 employee band, across the companies whose size is recorded.
Where are DMARC Manager users based?
The United States, Canada, Japan and Australia account for most detections, across 13 countries.
How current is this data?
12 companies were confirmed in the last 90 days. Last detection 13 October 2026.
