Legal
Sub-processors
The third parties we rely on to deliver the Voxline service. Last updated 7 October 2026.
As your data processor, Voxline Ltd engages the vetted sub-processors below to help deliver the service. Each is bound by data-protection terms, and we give customers advance notice of changes so you can object. This list supplements our Data Processing Agreement.
| Sub-processor | Purpose | Data categories | Location / region |
|---|---|---|---|
| Twilio | Telephony and SMS (inbound/outbound calls, text follow-ups) | Caller phone numbers, call metadata, SMS content | UK/EU edge; USA (UK IDTA safeguards) |
| Vapi | Voice orchestration and real-time transcription | Call audio, transcripts, call metadata | USA (UK IDTA safeguards) |
| ElevenLabs | Text-to-speech (the agent’s voice) | Agent response text (no caller PII stored) | USA (UK IDTA safeguards) |
| Resend | Transactional email (notifications, lead summaries) | Recipient email, name, enquiry/booking details | EU/USA (UK IDTA safeguards) |
| Neon | Managed Postgres database (application data store) | Account data, call transcripts, bookings, leads | EU region |
| Vercel | Application hosting and CDN | Request logs, cookies, usage data | Global edge network (UK IDTA safeguards) |
| Calendar integration (optional, only if you connect it) | Appointment details, calendar events | EU/USA (UK IDTA safeguards) |
International transfers
Caller data for UK customers is processed in UK/EU regions wherever possible. Where a sub-processor operates outside the UK, we rely on appropriate safeguards such as the UK International Data Transfer Addendum (IDTA).
Changes & objections
We’ll update this page and notify customers before adding or replacing a sub-processor. If you object to a change, email privacy@voxline.uk and we’ll work with you on an alternative.
Contact
Questions about our sub-processors? Email privacy@voxline.uk.