Every verified account
One row per company with a verified Proton signal: evidence, confidence grade, last-seen date.
Platform directory · #32 by verified companies
Companies that use Proton
21,900 verified companies run Proton, as of 2026-10-02. Signals: Proton, ProtonMail.
A floor, not a market total: IXM counts only companies whose signals it has verified, and the graph grows every day.
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 Proton install list
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.
| domain | platform | evidence | confidence | last seen |
|---|---|---|---|---|
| northwind-traders.com | Proton | service routing | Strong | 2026-09-10 |
| contoso-logistics.co.uk | Proton | service routing | Strong | 2026-08-11 |
| fabrikam-health.io | Proton | service routing | Strong | 2026-09-12 |
| adventure-works.de | Proton | service routing | Strong | 2026-08-13 |
| tailspin-toys.com | Proton | service routing | Strong | 2026-09-14 |
Use it for
What sales teams do with the Proton list
Displace
Sell against Proton? Every account that runs it, ready for outbound.
Partner
Integrate with Proton? Size the joint opportunity and target the overlap.
Benchmark
Track Proton adoption by segment, month over month, with a method you can audit.
Nearby in the directory
Platforms with a similar install base
Sophos33k accounts
Stripe28k accounts
LinkedIn23k accounts
Duo Security22k accounts
Constant Contact21k accounts
ActiveCampaign21k accounts
Verified companies are distinct domains carrying the platform's signals: a floor that grows every day, not a market total. One company can own several domains. A signal proves a relationship, not seat count or spend. Trademarks belong to their owners.