Outbound Campaign Auto-Responder (GPT + n8n)

Automatically detects positive replies in cold email campaigns and responds instantly with a personalized follow-up using GPT-4 and Gmail.

---

Why I built this

Manually reviewing and responding to outbound email replies is time-consuming — especially when most replies are neutral or negative. This automation helps outbound teams instantly respond to high-intent leads while interest is hot, saving time and increasing booked calls.

---

What it does

• Inputs:

  • Cold email replies (via Reply.io API in this example)
  • Campaign + contact metadata

• Logic:

  • Loops through all campaigns and checks for new replies
  • Uses GPT-4 to classify reply sentiment: positive, neutral, or negative
  • If positive, GPT-4 generates a personalized follow-up message
  • Sends email via Gmail (currently hardcoded to one account)

• Outputs:

  • Auto-generated email reply with Loom video link
  • (Optional) Logs contact email, sentiment, and campaign to Google Sheets

---

Demo

Loom Video → Outbound Campaign Responder Demo

---

Tools Used

• n8n
• OpenAI GPT-4
• Gmail (OAuth2)
• Reply.io API (can be swapped for Instantly, Smartlead, etc.)
• Google Sheets (optional logging)

---

Notes

• Currently configured with Reply.io, but adaptable to any platform with a campaign + reply API
• Sender Gmail is hardcoded for the demo — supports future routing logic for multiple inboxes
• Add-on ideas: calendar scheduling links, lead score tagging, fallback response generation