| Provider | What it does | What it sees | Where |
|---|---|---|---|
| Render | Runs the servers and stores each business's database and backups | Everything in your instance | Singapore |
| Stripe | Card payments and pay-links | Payment amount, and the payer's card and contact details | Australia / United States |
| Resend | Sends confirmations, reminders, receipts and password-reset emails | Recipient name, email address and the message contents | Japan / United States |
| ClickSend or Twilio (whichever you connect) | Sends text messages | Recipient mobile number and the message contents | Australia / United States |
| Apple | Delivers notifications to the Kairo iPhone app | The notification text, such as a new booking's time and client name | United States |
| Cloudflare | Runs the kairobookings.com domain, forwards email sent to it, and checks some sign-in forms for bots | Visitors' IP address and browser details, and emails sent to our addresses | Global network |
| Anthropic | Powers Kai, the in-app assistant, when a business switches it on | What the owner asks Kai, and the records Kai looks up or changes to answer (for example a client's name, appointments or notes) | United States |
One thing worth knowing. Your message log records what was sent to a client. If a reminder names a service that reveals something personal, that text sits with your email or SMS provider too.