Sub-processors
Who helps us run Kesru.
Last updated: 7 October 2026 · part of Annex 3 of our Data Processing Agreement
The companies under “Core service” and “Account and billing” process personal data on our behalf to provide Kesru, and each is bound by a data processing agreement. Where data leaves the European Economic Area, the transfer is covered by the European Commission's Standard Contractual Clauses or by the EU-U.S. Data Privacy Framework for certified recipients. We tell customers by email at least 30 days before we add or replace a sub-processor.
Core service
| Company | What they do for us | Data | Location |
|---|---|---|---|
| Oracle Corporation (Oracle Cloud Infrastructure) | Hosts the Kesru service, its database and our own voice models | All service data | USA (Ashburn, Virginia) |
| Google LLC (Google Cloud Vertex AI) | Understands callers and speaks with them during the call | Caller audio, conversation text, generated speech | USA (us-central1) |
| Google LLC (Gemini API, paid tier) | Writes the call summary, reads your website to prepare your receptionist, and serves as the second route for the call itself if the Vertex route is unavailable | Conversation text, public website text, and in that case caller audio and generated speech | USA |
| Eleven Labs Inc. | Speech recognition and spoken replies (voice) during the call | Caller audio, text for speech, generated speech | USA |
| OpenAI, L.L.C. | Language model used in the backup conversation path and the website chat, and spoken replies (text-to-speech) as a last-resort backup if the main voice is unavailable | Conversation and chat text, text for speech | USA |
| Alibaba Cloud (Model Studio) | Backup speech recognition and language model, used only if the main path fails during a call | Caller audio, conversation text | USA (Virginia) |
| Telnyx LLC | Phone numbers and call connection | Phone numbers, call audio while the call lasts, call metadata | USA |
| Twilio Inc. | Phone numbers and call connection | Phone numbers, call audio while the call lasts, call metadata | USA |
| MASA Import & Vertrieb UG (haftungsbeschränkt) | Provides the backup server and the kesru.com mailboxes from its own contracts with Contabo and netcup (below) | Encrypted backups, business emails | Germany |
| Contabo GmbH (via MASA) | Encrypted backups and uptime monitoring | Encrypted copy of the service database | USA |
| netcup GmbH | Sends emails such as call summaries and account messages, and hosts the kesru.com mailboxes (via MASA) | Email addresses, email content | Germany |
Account and billing
| Company | What they do for us | Data | Location |
|---|---|---|---|
| Stripe, Inc. / Stripe Payments Europe, Ltd. | Subscriptions, payments and the billing portal | Name, email, billing details; card data is handled only by Stripe | USA, EU |
| Cloudflare, Inc. (Turnstile) | Protects the sign-up form against bots | IP address and browser signals at sign-up | Worldwide |
Telephone carriers
Calls reach Kesru through the public telephone network. Carriers that only transmit calls act as telecommunications providers under their own terms and legal obligations, not as our processors.
| Company | What they do | Data | Location |
|---|---|---|---|
| Bulk Solutions, LLC (BulkVS) | Carries calls between the telephone network and Kesru and provides phone numbers | Phone numbers, call signalling and audio while the call is carried, call records | USA |
Services you connect yourself
If you connect your own calendar (Google, Microsoft) or let Kesru set up call forwarding in your own phone system (for example Webex, Zoom, RingCentral, Placetel, sipgate, Telnyx or Twilio), that provider works for you under your own agreement with them, not as our sub-processor. Credentials for phone systems are used only for the forwarding step and are not stored.