Labs / Time machine / Plain
Plain
The subprocessor list as we last read it, on Nov 11, 2026.
Dates are when we read the list (UTC), not when Plain changed it. Between two readings we don't know what it said.
tall: list changed · medium: document changed · short: read, no change · x: check failed · dotted: change dates only. Tap a tick or use the date box.
We record change dates, not every check, before Oct 11, 2026.
We have published no changes to this vendor's list; our first reading was Sep 22, 2026.
Read Nov 11, 2026 · 29 companies named as a subprocessor · stored document
| Name | Purpose | Location | First read |
|---|---|---|---|
| Amazon Web Services | Cloud provider; Hosting/Infrastructure | UK | |
| Anthropic AI | AI/LLM Provider | Global | |
| Baseten AI | Engineering | ||
| Cloudflare | Cloud monitoring; Hosting/Infrastructrure, Firewall && DDoS protection | Distributed | |
| Customer.io | Marketing; Marketing Analytics | US & EU | |
| Datadog | Cloud monitoring | ||
| Cloud provider; Hosting / Infrastructure | Distributed | ||
| HubSpot | CRM; Marketing | US | |
| Hyperline | Finance and payments | ||
| Linear | Product and design | US | |
| Liveblocks | Real time and collaboration features | US | |
| n8n | Workflow automation | EU | |
| Nango | Integrations | US | |
| Omni | Data analytics; Reporting & Analytics | US | |
| OpenAI AI | AI; AI/LLM Provider | US | |
| Polytomic | Data storage and processing | US | |
| PostHog | Data analytics | US | |
| Postmark | Email Infrastructure; Email processing | US | |
| Render | Cloud provider; Infrastructure / Hosting | EU | |
| salesforce | CRM integration; This is an opt-in integration that users can use to push customer data between Plain and their CRM. | US | |
| Segment | Analytics / Reporting; Data analytics | US | |
| Slack | Collaboration | Distributed | |
| Stripe | Finance and payments | US | |
| Supabase | Use as our GTM data infrastructure. Stores call recording analysis, customer data, and enrichment data to run out GTM intent engine. It receives signals from RB2B, LinkedIn Ads, and Attio to provide a fit and intent score used by Cargo (through Polytomic/Plain). | Cloud provider | |
| Tinybird | Analytics / Reporting Infrastructure; Data analytics | EU | |
| Turbopuffer | Database & Hosting | EU | |
| Vercel | Hosting; Hosting/Infrastructure | Distributed | |
| WorkOS | Authentication | US | |
| xAI AI | LLM which reads codebase and helps engineering team to understand existing code and for development. | Engineering |
Built from the changes we published; changes we recorded without an alert (parser fixes, entries approved after review) don't appear. Where we later improved how we read a list, an earlier list may look different from the vendor's page at the time.
Gaps in our readings
No gaps since Oct 11, 2026.
All readings (38)
History starts Sep 22, 2026. Dates are UTC. Data CC BY 4.0. Shown as stored when this page was built.