Subprocessors
The third-party service providers we use to help deliver our AI voice and chat agent services, and how we notify customers of changes.
Last Updated: January 19, 2026
CallSphere uses the following third-party service providers (subprocessors) to help deliver our Services. Each subprocessor has been selected based on their ability to provide appropriate security and privacy protections.
| Subprocessor | Legal Entity | Purpose | Data Categories | Location | Privacy Policy |
|---|---|---|---|---|---|
| Amazon Web Services (AWS) | Amazon Web Services, Inc. | Cloud infrastructure, hosting, and data storage | Account data, voice recordings, transcripts, usage/log data | United States | View Policy |
| Vercel | Vercel Inc. | Application hosting and deployment | Account data, usage/log data, device and network metadata | United States | View Policy |
| OpenAI | OpenAI, L.L.C. | AI language models for voice and chat agents | Conversation content (prompts, transcripts) sent for inference | United States | View Policy |
| Twilio | Twilio Inc. | Telephony and voice communication services | Phone numbers, call metadata, voice audio | United States | View Policy |
| Stripe | Stripe, Inc. | Payment processing | Billing and payment information | United States | View Policy |
| Amazon SES | Amazon Web Services, Inc. | Transactional email delivery | Email addresses, message content for delivery | United States | View Policy |
Updates to This List
We may update this list from time to time as we add or change subprocessors. If you have a Data Processing Addendum (DPA) with us that includes subprocessor notification provisions, we will notify you of any changes in accordance with those terms.
To be notified of subprocessor changes, email support@callsphere.ai with the subject “Subprocessor change notifications” and we will add you to our change-notification list.
Data Processing Addendum
Business customers who require a Data Processing Addendum (DPA) that covers our use of subprocessors can request one by contacting us at support@callsphere.ai.
Questions
If you have questions about our subprocessors or data processing practices, please contact us:
CallSphere
Email: support@callsphere.ai