Building a Multi-Touch Outreach Automation Pipeline with Supabase Edge Functions and VAPI Voice Agents
This article describes a B2B outreach automation system built using Supabase Edge Functions and VAPI voice agents, covering the technical architecture, Supabase schema design, serverless functions for email sequencing, and voice call integration.
Why it matters
This article provides a detailed technical breakdown of a modern, serverless-based sales infrastructure, which can be useful for developers building similar systems.
Key Points
- 1Developed a complete outreach automation system combining email, PDF, and voice calls
- 2Leveraged Supabase Edge Functions and pg_cron scheduling for orchestration
- 3Integrated VAPI voice agents for qualification calls
- 4Learned lessons across 8 production iterations, including retry logic and cost optimization
Details
The article details the technical architecture of a B2B outreach automation system built by the author. The system combines asynchronous email sequencing, PDF capability statements, and synchronous voice calls, all orchestrated through Supabase Edge Functions and pg_cron scheduling. The Supabase schema design for prospect management is explained, along with the 6 serverless functions handling the 4-touch email sequences via transactional mail. The integration of VAPI voice agents for qualification calls is also covered. The article shares learnings from 8 production iterations, including implementing retry logic, state management for multi-channel touchpoints, and cost optimization on the Supabase free tier before scaling to a pro plan.
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