Home/ Projects/ AI/AI Email Auto-Responder & Classifier

Step-by-step guideIntermediateAI Estimated: Weekend Est. 8h total

Progress:

AI Email Auto-Responder & Classifier

Build an automated email client classifier that drafts replies based on content intents.

Tech Stack:Node.js@google/genaiNodemailerIMAP

Roadmap Steps

Key Features

Concepts

Tech Stacks

Common Pitfalls

Prequisites

Interactive Project Checklist

Tick off requirements as you build to track real-time completion.

Completed

Step-by-Step Development Roadmap

Follow this chronological guide to build the project from scratch.

0 / 1 Steps Completed

Step 1

Gemini Intent Classifier Prompt

3 key tasks

Compile classification prompt schemas forcing Gemini to return structured JSON intents.

Key Implementation Tasks

Set up connection options
Implement prompts configuration
Write output checking validations

responder.js

const { GoogleGenAI } = require("@google/genai");
const ai = new GoogleGenAI({ apiKey: process.env.GEMINI_API_KEY });

async function classifyEmail(subject, body) {
  const prompt = `
  Analyze this email. Subject: ${subject}. Body: ${body}.
  Output JSON format:
  { "intent": "billing" | "support" | "spam", "replyNeeded": boolean }
  `;
  
  const response = await ai.models.generateContent({
    model: 'gemini-2.5-flash',
    contents: prompt,
    config: { responseMimeType: 'application/json' }
  });
  return JSON.parse(response.text);
}

Common Challenges & Debugging Solutions

Real issues students hit during development and how to troubleshoot them fast.

API Errors

Spam Auto-replies Loop

Issue: Replying to spam addresses causes loop systems mail blocks.

Fix Solution:Only auto-reply if intent is support or billing and replyNeeded is true.

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Home/ Projects/ AI/AI Email Auto-Responder & Classifier

Step-by-step guideIntermediateAI Estimated: Weekend Est. 8h total

Progress:

AI Email Auto-Responder & Classifier

Build an automated email client classifier that drafts replies based on content intents.

Tech Stack:Node.js@google/genaiNodemailerIMAP

Roadmap Steps

Key Features

Concepts

Tech Stacks

Common Pitfalls

Prequisites

Interactive Project Checklist

Tick off requirements as you build to track real-time completion.

Completed

Step-by-Step Development Roadmap

Follow this chronological guide to build the project from scratch.

0 / 1 Steps Completed

Step 1

Gemini Intent Classifier Prompt

3 key tasks

Compile classification prompt schemas forcing Gemini to return structured JSON intents.

Key Implementation Tasks

Set up connection options
Implement prompts configuration
Write output checking validations

responder.js

const { GoogleGenAI } = require("@google/genai");
const ai = new GoogleGenAI({ apiKey: process.env.GEMINI_API_KEY });

async function classifyEmail(subject, body) {
  const prompt = `
  Analyze this email. Subject: ${subject}. Body: ${body}.
  Output JSON format:
  { "intent": "billing" | "support" | "spam", "replyNeeded": boolean }
  `;
  
  const response = await ai.models.generateContent({
    model: 'gemini-2.5-flash',
    contents: prompt,
    config: { responseMimeType: 'application/json' }
  });
  return JSON.parse(response.text);
}