Platform #2 of 500 · Install base
Microsoft Outlook logo

Companies that use Microsoft Outlook

1,126,978 known accounts carry Microsoft Outlook records in the IXM Install Graph, counted from 2.9 million company domains on 2026-09-04. DNS signals matched: Outlook (Microsoft), Microsoft 365, Microsoft (Server / Services), Microsoft-AD/Entra-ID, Microsoft, Microsoft MSCID.

Get a quote Check my accounts for Microsoft Outlook

List price by install base: $500 up to 5,000 known accounts, $1,000 up to 10,000, quoted above. How the numbers are made.

What you get

The Microsoft Outlook install list

Every known account

One row per company domain carrying a Microsoft Outlook record, with the evidence type, a confidence grade and the last-seen date.

Context on each row

The other platforms seen on the same domain, the email platform, and the hosting country, so you can segment before you reach out.

Delivered in 2 business days

CSV by email. Or search it live: platform plans from $499 a month include install-graph search and exports.

What a row looks like (example data)
domainplatformevidenceconfidencelast seen
northwind-traders.comMicrosoft OutlookMX hostStrong2026-09-10
contoso-logistics.co.ukMicrosoft OutlookMX hostStrong2026-08-11
fabrikam-health.ioMicrosoft OutlookMX hostStrong2026-09-12
adventure-works.deMicrosoft OutlookMX hostStrong2026-08-13
tailspin-toys.comMicrosoft OutlookMX hostStrong2026-09-14
Use it for

What sales teams do with the Microsoft Outlook list

Displace

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

Partner

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

Benchmark

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