United Vows uses the third-party service providers below to operate the platform. Each is a “sub-processor” that may process personal information on our behalf, under contract and only as needed to provide their service. This page is referenced by our Privacy Policy and is updated when a provider is added or removed.
| Sub-processor | Purpose |
|---|---|
| Stripe, Inc. | Payment processing and vendor payouts (Stripe Connect). Couples pay vendors directly; United Vows does not hold funds. |
| Neon, Inc. | Managed PostgreSQL database hosting (couple, vendor, and booking data). |
| Vercel, Inc. | Application hosting, serverless compute, edge network, and file storage (Vercel Blob). |
| Upstash, Inc. | Managed Redis for sessions, rate limiting, and caching. |
| OpenAI | AI features (Vows Assistant chat, content generation) and transcription of voice answers you choose to speak. |
| Anthropic | AI features (model fallback and prose generation). |
| Google (Gemini) | AI features (batch and multimodal processing). No Google Calendar data is used for AI features. |
| Google (Google Calendar) | Google Calendar synchronisation for vendors who connect it: booking event details and attendee email addresses written to a separate "United Vows" calendar in the vendor's own Google account, and the vendor's busy/free times read. |
| Microsoft Corporation | Outlook Calendar synchronisation for vendors who connect it, including event details and attendee email addresses. |
| Vapi | AI Receptionist voice-call handling for vendors who enable it. |
| Twilio (Twilio Verify) | Only for claiming a business listing: a one-time code texted to the phone number on that listing, when text verification is switched on and only if the claimant chooses a text instead of email. Receives that phone number and the code. |
| PostHog | Product analytics and feature usage measurement. |
| Sentry | Application error monitoring and performance diagnostics. |
| Resend | Transactional email delivery (account, booking, and notification emails). |
| BoldSign | Electronic signature service for contracts executed through the platform. |
Questions about our sub-processors can be sent to privacy@unitedvows.com.