Companies / letter.ai
letter.ai tech stack
letter.ai declares 24 subprocessors, including AI providers Anthropic, Deepgram, ElevenLabs, Fireworks AI, OpenAI.
Declared subprocessors
Subprocessor list From the company's own list. Read the source.
| Subprocessor | Purpose |
|---|---|
| Algolia | Search |
| Amazon Web Services | Hosting services |
| Anam | Video AI Processing; No customer data is used to train models |
| Anthropic | AI inference; no customer data is used to train models |
| Apify | Web scraping |
| Buildkite | CI / CD |
| ConvertAPI | PDF conversion |
| Datadog | Observability |
| Deepgram | AI audio processing |
| ElevenLabs | Voice AI processing; no customer data is used to train models |
| Fireworks AI | Open-source model hosting |
| Translation Processing | |
| HeyGen | Video AI Processing; No customer data is used to train models |
| Intercom | Customer Support Messaging and In-App Chat |
| LiveAvatar | Video AI Processing; No customer data is used to train models |
| Microsoft Azure | Text Embedding Models |
| Mux | Video processing |
| OpenAI | AI inference; no customer data is used to train models |
| Pinecone | Vector Database |
| PropelAuth | Authentication and Identity Management |
| Recall.ai | Transcripts, recordings, and metadata from meetings |
| Retell AI | Voice AI processing; no customer data is used to train models |
| SalesLoft | Sales Engagement Plugin and Content Recommendation Processing |
| Stripe | Payment Processing |
Seen on the website
Website This shows what the site runs, not what data it shares.
| Technology | Signal we saw |
|---|---|
| Cloudflare | header: cf-ray: a54651bc3b1acb7d-LAX |
| Google Tag Manager | script: j.src= 'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f |
| Google Workspace | mx: smtp.google.com. |
| Webflow | script: https://cdn.prod.website-files.com/650abce97a4c369432d4a2c8/66257e41d980aa1cba244c32_ROI-Calculator |
Vendor's own statement, retrieved from the source URL on the date shown. StrataDB does not verify the underlying claim. How we collect data.