Sub-processors
Last updated 18 October 2026
These are the companies that process personal data on our behalf to run Prefera. Personal data is stored in the European Union.
| Provider | What it does | Where |
|---|---|---|
| Supabase, Inc. | Database, sign-in and file storage | EU (AWS Frankfurt or Ireland region) |
| Vercel Inc. | Website and application hosting | EU functions region (Dublin); global content network for static files |
| Resend (Plus Five Five, Inc.) | Sending sign-in links and results emails | EU sending region (Ireland) |
Each provider is bound by a data processing agreement. Where a provider is based outside the EU, transfers are covered by the European Commission's Standard Contractual Clauses or the EU-US Data Privacy Framework.
We tell organisation customers at least 30 days before adding or replacing a sub-processor, so they can object. To be notified, email hello@qestra.io.