Platform directory · #1 by verified companies
Microsoft 365 logo

Companies that use Microsoft 365

1,126,240 verified companies run Microsoft 365, as of 2026-09-05. Signals: Outlook (Microsoft), Microsoft 365, Microsoft (Server / Services), Microsoft-AD/Entra-ID, Microsoft, Microsoft MSCID.

A floor, not a market total: IXM counts only companies whose signals it has verified, and the graph grows every day.

Buy the list · $10,000 Check my accounts for Microsoft 365

Priced by install base, from $500 up to 5,000 companies to $10,000 for the largest platforms. Card checkout, no quote. How the numbers are made.

What you get

The Microsoft 365 install list

Every verified account

One row per company with a verified Microsoft 365 signal: evidence, confidence grade, last-seen date.

Context on each row

The other platforms on the same domain, the email platform and the hosting country. Segment before you reach out.

Delivered in 2 business days

CSV by email. Or search it live on a platform plan from $499 a month.

What a row looks like (example data)
domainplatformevidenceconfidencelast seen
northwind-traders.comMicrosoft 365service routingStrong2026-09-10
contoso-logistics.co.ukMicrosoft 365service routingStrong2026-08-11
fabrikam-health.ioMicrosoft 365service routingStrong2026-09-12
adventure-works.deMicrosoft 365service routingStrong2026-08-13
tailspin-toys.comMicrosoft 365service routingStrong2026-09-14
Use it for

What sales teams do with the Microsoft 365 list

Displace

Sell against Microsoft 365? Every account that runs it, ready for outbound.

Partner

Integrate with Microsoft 365? Size the joint opportunity and target the overlap.

Benchmark

Track Microsoft 365 adoption by segment, month over month, with a method you can audit.