---
title: "Subprocessors"
description: "The third-party vendors (subprocessors) that process customer personal data for Unitpost: what each one does and where, and how we announce changes."
url: https://www.unitpost.com/subprocessors
section: "Legal"
updated: 2026-09-18
---
# Subprocessors

_Last updated: 2026-09-18_

These are the third-party vendors (“subprocessors”) Unitpost uses to process customer personal data in order to provide the Service. It is the same list as section 7 of our [Privacy Policy](https://www.unitpost.com/privacy#subprocessors), which section 5 of our [Data Processing Addendum](https://www.unitpost.com/dpa#subprocessors) incorporates.

## 1. Current subprocessors

Each subprocessor is engaged under a written agreement imposing data-protection obligations no less protective than our Data Processing Addendum, and we remain responsible for their performance.

| Subprocessor | Purpose | Location |
| --- | --- | --- |
| Amazon Web Services (AWS) | Cloud hosting, email delivery (SES), SMS delivery and carrier registration (End User Messaging SMS: message content, destination numbers, consent and registration details are passed to carriers and registries through it), file/object storage (S3), rate-limit counters (DynamoDB), encryption key management (KMS), and content delivery (CloudFront) | United States (us-east-1) |
| Supabase | Primary application database and authentication | United States |
| Stripe | Payment processing and subscription billing | United States |
| Google Cloud (Vertex AI) | Hosts the AI models behind the optional in-product assistant; processes the content you submit to the assistant to generate responses | United States |
| Intercom | In-app and website support messaging | United States |
| Twilio | Delivery of one-time passcodes over SMS (where enabled) | United States |
| PostHog | Product analytics and session replay to understand and improve how the Service is used | United States |
| Google Analytics | Aggregate website analytics for our public marketing pages | United States |

## 2. Carriers and registries

Mobile carriers, their aggregators and the carrier registries that approve SMS sending identities receive message content, destination numbers and registration details as independent recipients in order to deliver and approve your traffic, as described in our [Privacy Policy](https://www.unitpost.com/privacy). They are not our subprocessors.

## 3. Changes to this list

We update this list before adding or replacing a subprocessor that processes customer personal data. To receive advance email notice of such changes, request it at [legal@unitpost.com](mailto:legal@unitpost.com). Your right to object is set out in section 5 of our [Data Processing Addendum](https://www.unitpost.com/dpa#subprocessors).

## 4. Contact

Questions about our subprocessors or a vendor review: [legal@unitpost.com](mailto:legal@unitpost.com).