Hosting providers & MSPs
Built by people who run mailbox fleets. Multi-tenant console, per-client policies, cPanel and Exchange coverage — protect every customer from one pane of glass.
Financial services
Real sender, real thread, fraudulent wire. Doorcheck checks payment requests against years of relationship history before money moves.
Healthcare
Credential phishing aimed at clinical staff and invoice fraud aimed at accounts payable — caught by behavior, with audit logs your compliance team can use.
Legal & professional services
Client-privileged inboxes are prime targets for account takeover and thread hijacking. Doorcheck notices when a trusted conversation changes hands.
Technology & SaaS
OAuth-consent phishing, vendor compromise, and developer-targeted lures. API-first deployment your platform team will actually like.
Government & public sector
Impersonation and vendor fraud against agencies — with a sovereign self-hosted deployment when data must never leave your infrastructure.
Education
Thousands of mailboxes, lean IT teams, constant credential phishing. Verdicts, purges, and coaching that run themselves.
E-commerce & retail
Brand-spoof phishing and supplier invoice fraud across distributed teams — plus DHL-style delivery lures your staff see daily.