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Code & Developer Tools20 vendorsUpdated Nov 11, 2026duffel.comSubprocessor list

Duffel uses 20 subprocessors and infrastructure vendors, including Google Cloud, OpenAI and Stripe, based on its public subprocessor list. Last checked Nov 11, 2026.

AI Stack · 2
Infrastructure · 18

AI Stack

Foundation Models

Anthropic
669 companies

AI assistance (e.g. Notion connector): Customer / User data

OpenAI
823 companies

AI assistance: Customer / User / Traveller data

View their stack →

Infrastructure

Cloud & Networking

Cloudflare
615 companies

Platform security: Customer / User / Traveller Data

Google Cloud
1081 companies

Processing and storage (cloud infrastructure): Customer / User / Traveller data

Compliance & Security

Evervault
2 companies

Payment processing: Cardholder data

VeryGood Security
5 companies

Storage and encryption of cardholder data: Cardholder data

Auth & Identity

SEON
5 companies

Fraud detection: Customer / User / Traveller data

Communications

ActiveCampaign
12 companies

Marketing email and automation: Customer data

Stream
14 companies

Customer / Traveller support: Customer / User / Traveller data

Mailgun
207 companies

Transactional emails e.g. password reset: Customer / User data

Slack
520 companies

Customer support communications: Customer data

Zoom
194 companies

Video conferencing: Customer data

Observability

Sentry
518 companies

Error reporting and application monitoring (including IP addresses): Customer / User data

Billing & Payments

Stripe
741 companies

Payment processing (Duffel Payments): Cardholder data and Customer KYC data

Analytics & BI

PostHog
272 companies

User analytics: Customer / User data

Segment
189 companies

User analytics: Customer / User data

CRM & Support

Plain
57 companies

Customer support communications: Customer data

Zendesk
369 companies

Customer / Traveller support: Customer / User / Traveller data

Developer Platform

Linear
124 companies

Customer support communications: Customer data

Notion
94 companies

Knowledge hub: Customer data

Model labs reached through vendors 4

Duffel does not list these model providers. Vendors on its list name them on their own subprocessor lists.

Changes

Checked Nov 11, 2026Source

This is the first saved copy of Duffel’s subprocessor list. Added and removed vendors will show here after the next check.

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