Sub-processors
Every supplier, their role and location.
In effect from 1 October 2026.
We use as few suppliers as we can, and this is all of them.
Customers are given at least 30 days' notice by email before we engage a new one, and may object — see clause 6 of the data processing agreement.
Current sub-processors
| Supplier | What they do | Where | What they can reach |
|---|---|---|---|
| Fly.io | Runs the application and the database | London, United Kingdom (Fly.io lhr) |
All customer data, as the hosting provider |
| Amazon Web Services | Stores uploaded documents (S3) and sends the service's email (SES) | London, United Kingdom (AWS eu-west-2) |
Uploaded documents; the contents of emails we send, including names and email addresses |
| Sentry | Collects application error reports so faults get fixed | EU region | Technical error context only — personal data is stripped before an error leaves our systems |
| Better Stack | Monitors whether the service is up, and hosts the public status page | EU | No customer data; it checks public URLs from outside |
| Stripe | Takes card payments, holds the payment method, and issues receipts | Ireland, with processing in the United States | The billing contact's name, email and billing address, and what the account is charged. No employee records, and no card details ever reach us |
Other suppliers, which are not sub-processors
Typefaces. The two typefaces our pages use are served from our own servers, not a font network. Loading a page therefore involves no request to anyone but us, and no third party learns your IP address from visiting.
Our own email provider. Correspondence you send us — support, enquiries, invoices — reaches an ordinary business mailbox. That is us acting as controller of our own correspondence, not a sub-processor of your employee data.
What we do not use
smplr carries no advertising networks, no analytics or tracking services, no session-recording tools, and no third-party chat widgets. Nothing loads in a customer's account from a supplier not listed above.