Data Processing & Transfers

List of Subprocessors 

Current
Revised October 2026

Customer.io Infrastructure Subprocessors

Subprocessor

Purpose

Location

More info

Amazon Web Services

Cloud Hosting

USA, EU

https://aws.amazon.com

Google Cloud Platform

Cloud Hosting, Analytics, AI

USA, EU

https://cloud.google.com

Snowflake

Data Warehousing, Analytics

USA, EU

https://www.snowflake.com

Customer.io AI Feature Subprocessors

Subprocessor

Purpose

Location

More info

OpenAI, LLC

AI model inference for optional AI-powered features

USA, EU

https://openai.com/policies/services-agreement

Google Cloud (Vertex AI)

AI model hosting and inference for optional AI-powered features

USA, EU

https://cloud.google.com/terms/service-terms

Anthropic (Claude)

AI model hosting and inference for optional AI-powered features

USA

https://www.anthropic.com/legal/commercial-terms

Customer.io Platform Subprocessors

Subprocessor

Purpose

Location

More info

Mailgun

Customer Communications

USA, EU

https://www.mailgun.com

Twilio

Customer Communications*

USA

https://www.twilio.com/en-us/legal/tos

Infobip

Customer Communications*

USA, EU

https://www.infobip.com/policies/service-terms-conditions