Platform #44 of 500 · Install base
Postmark logo

Companies that use Postmark

34,299 known accounts carry Postmark records in the IXM Install Graph, counted from 2.9 million company domains on 2026-09-04. DNS signals matched: Postmark, Postmark (Active Campaign).

Get a quote Check my accounts for Postmark

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 Postmark install list

Every known account

One row per company domain carrying a Postmark 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.comPostmarkSPF includeStrong2026-09-10
contoso-logistics.co.ukPostmarkSPF includeStrong2026-08-11
fabrikam-health.ioPostmarkSPF includeStrong2026-09-12
adventure-works.dePostmarkSPF includeStrong2026-08-13
tailspin-toys.comPostmarkSPF includeStrong2026-09-14
Use it for

What sales teams do with the Postmark list

Displace

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

Partner

Integrate with Postmark? Size the joint opportunity and target the overlap.

Benchmark

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