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Subprocessors

Last updated 18 August 2026.

Keywindow currently uses the following providers to deliver the beta.

Render

Application hosting, persistent database storage, network delivery and platform logs. Hosting region is configured in Frankfurt.

Resend

Transactional email delivery when email notifications are enabled.

Samsung SmartThings

Authentication, device discovery, lock status, lock-code commands and device event history. SmartThings is also an independent service you choose to connect.

Future payment provider

No payment provider receives beta-user data today. We expect to use Stripe Checkout and the Stripe customer portal before paid plans begin. We will update this page before sending data to Stripe.

Questions should be sent to the contact address in your beta invitation.