AI-Powered Personalized Cold Email Sequences with GPT-4, Mailgun & Supabase

This n8n workflow revolutionizes cold email outreach by automating intelligent, multi-step email sequences tailored to each prospect. Upon detecting a new lead in Supabase, it leverages GPT-4 to research the company, role, and pain points, then generates highly personalized HTML emails with custom hooks, brand-aligned tone, and multi-language support. Emails are scheduled optimally with throttling to maintain deliverability, ensuring distributed sends across ideal days and hours.

The workflow handles full sequences: initial outreach, contextual follow-ups if no reply, and reply detection for next actions. All interactions sync back to Supabase for comprehensive lead tracking, history, and expansion. A companion workflow supports lead sourcing, deduplication, and enrichment.

Benefits include scaled personalization without manual effort, higher engagement via authentic messaging, preserved sender reputation through smart delivery logic, and seamless CRM integration. Ideal for sales teams, marketers, and agencies running outbound campaigns, saving hours on research, writing, and scheduling while maximizing conversions.