| Subprocessor | Purpose | Data | Location | Since |
|---|---|---|---|---|
| Amazon RDS Postgres | Primary Postgres database for the product | All product data: account, booking, billing and support records | United States | 20 Aug 2026 |
| Amazon Web Services (S3) | File and media storage | Uploaded images and media; depending on configuration, call recordings and transcripts | United States | 20 Aug 2026 |
| Cloudflare | File and media storage (R2); alternative email transport (configuration-dependent, only one email provider active at a time) | Uploaded images and media; call recordings and transcripts (configuration-dependent); when used for email: sender/recipient names and addresses, subject and body, calendar invite details | United States | 20 Aug 2026 |
| Vercel | Hosting and CDN for the app and website; website analytics | IP addresses, request metadata, and any personal data contained in requests/responses in transit | United States | 20 Aug 2026 |
| Metabase Cloud | Internal business intelligence and analytics | Production account and booking records made available through connected data sources | United States | 20 Aug 2026 |
| SendGrid (Twilio) | Transactional email delivery: confirmations, reminders, invites (active provider for cal.com) | Recipient and sender addresses and names, subject and body, calendar invite (title, times, description, attendee list) | United States | 20 Aug 2026 |
| Twilio | SMS and WhatsApp reminders, phone verification, phone number lookup | Phone numbers, message contents, verification codes | United States | 20 Aug 2026 |
| Intercom | Support chat and support tickets | Name, email, account ID, plan, signup date, org and usage counts, contents of support conversations | United States | 20 Aug 2026 |
| Daily.co | Cal Video: video calls, recordings, transcripts | Meeting and participant data, audio and video of recorded calls, transcripts | United States | 20 Aug 2026 |
| Slack | Internal and external communication | Messages, files and attachments, channel and workspace metadata, user profile information (name, email address, avatar) | United States | 20 Aug 2026 |
| Stripe | Subscriptions, checkout, invoices, and customer-collected booking payments | Email, billing name and address, card details entered on Stripe's own checkout (PCI-DSS certified; card numbers never reach Cal.com servers), subscription metadata | United States | 20 Aug 2026 |
| OpenAI | AI meeting notes: summarizing Cal Video transcripts (opt-in AI feature) | Transcript text (may include names and meeting content); no meeting titles, dates, attendee records, or links. No model training on customer data. | United States | 20 Aug 2026 |
| Anthropic | In-product AI assistants (e.g. building routing forms); opt-in AI feature | User prompts typed to the assistant and the form or account context needed to answer. No model training on customer data. | United States | 20 Aug 2026 |
| Retell AI | Cal.ai phone agents that place or take calls (opt-in AI feature) | Phone numbers; guest name, email and company where configured; call audio and conversation content. No model training on customer data. | United States | 20 Aug 2026 |
| PostHog | Product analytics | IP and request metadata; events keyed to an opaque ID (no raw database IDs, emails, slugs, names or booking answers); GeoIP disabled, proxy strips forwarded IPs; outside allowlisted regions events attributed to organization, not person | United States | 20 Aug 2026 |
| Google Analytics / Google Tag Manager | Marketing-site traffic measurement (cal.com website only, not the app; outside the EU) | IP address, browser and device data, pages viewed | United States | 20 Aug 2026 |
| Dub | Website and signup attribution (marketing site only, not the app) | IP address, browser and device data, referral and page data | United States | 20 Aug 2026 |
| X (Twitter) Ads | Ad measurement (marketing site only, not the app) | IP address, browser data, and pixel conversion events | United States | 20 Aug 2026 |
| Whop | Whop Payments is a global payment-processing platform that powers Cal Pay, which is a core part of Cal.com's payments offering. | Name, email, payment methods | United States | 21 Aug 2026 |