Sub-processor List

Last Updated: January 12, 2026

This page lists the sub-processors that SIZORAX LTD (trading as Testimint) engages to process personal data on behalf of our customers ("Controllers") as described in our Data Processing Agreement.

As outlined in the DPA, we will notify you of any intended additions or changes to sub-processors at least 30 days before the change takes effect.

Current Sub-processors

Convex

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Backend infrastructure, database hosting, and real-time data synchronisation

Data Processed:

Account and authentication data
Testimonial content and metadata
Project and workspace configurations
Analytics events

Location: United States

Transfer Mechanism: Standard Contractual Clauses (SCCs)

OpenAI

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AI-powered features: transcription, summarisation, sentiment analysis, topic extraction

Data Processed:

Testimonial text content (when AI features enabled)
Audio/video files for transcription (when AI features enabled)

Location: United States

Transfer Mechanism: Standard Contractual Clauses (SCCs)

Stripe

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Payment processing and subscription management

Data Processed:

Payment information
Billing contact details
Subscription and plan information

Location: United States (with global infrastructure)

Transfer Mechanism: Standard Contractual Clauses (SCCs), Stripe is certified under EU-US Data Privacy Framework

Vercel

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Web application hosting, content delivery network (CDN), and edge functions

Data Processed:

Web traffic and request logs
Session and authentication cookies

Location: Global (edge network with data centres worldwide)

Transfer Mechanism: Standard Contractual Clauses (SCCs)

Customer-Configured Integrations

In addition to the sub-processors listed above, you may configure integrations that result in data being shared with third parties of your choosing:

Slack: If you configure Slack integration, testimonial notifications (including author names and testimonial content) will be sent to your specified Slack channels.
Custom Webhooks: If you configure custom webhooks, testimonial data will be sent to the endpoints you specify.

These customer-configured integrations are under your control and direction. You are responsible for ensuring you have appropriate agreements in place with these third parties.

Notification of Changes

We maintain this list and will update it when sub-processors are added, removed, or changed. To receive notifications of sub-processor changes:

Check this page periodically for updates
Contact us through our Contact Page to request email notifications

If you have objections to a new sub-processor, please contact us within 30 days of notification and we will work with you to address your concerns.

Questions

If you have questions about our sub-processors or data processing practices, please contact us through our Contact Page.