Lead Generator

A powerful CLI tool and Node.js module for sending mass lead emails with AI-powered personalization and automated voice cold-calling. Built for sales teams who want to scale their outreach while maintaining personalization and professionalism.

Features

• 📧 Mass Email Campaigns - Send personalized emails to hundreds of leads
• 📞 Voice AI Cold-calling - Automated cold calling with Bland.ai integration
• 🤖 AI Personalization - OpenAI-powered template customization
• 📊 CSV Processing - Import leads from CSV files with validation
• 🎯 Smart Templates - 10 pre-built sales email templates
• 📈 Batch Processing - Configurable batch sizes with rate limiting
• 🔍 Email Validation - Comprehensive lead data validation
• 🎣 Webhook Server - Real-time call outcome processing with Hono.js
• 🎛️ IVR System - Press 1 for Calendly, Press 2 to opt-out
• 🛠️ CLI & Module - Use as command-line tool or Node.js module

Installation

Using pnpm (recommended)

pnpm install @profullstack/lead-generator

Using npm

npm install @profullstack/lead-generator

Global Installation (for CLI usage)

pnpm install -g @profullstack/lead-generator

Quick Start

1. Environment Setup

Create a .env file with your API keys:

# Mailgun Configuration (Required for email campaigns)
MAILGUN_API_KEY=your_mailgun_api_key_here
MAILGUN_DOMAIN=your_mailgun_domain_here

# OpenAI Configuration (Required for AI personalization)
OPENAI_API_KEY=your_openai_api_key_here

# Bland.ai Configuration (Required for voice calling)
BLAND_AI_API_KEY=your_bland_ai_api_key_here
VOICE_WEBHOOK_PORT=3001
VOICE_WEBHOOK_URL=https://your-domain.com/webhook

# SMS & Calendly Configuration (Optional)
SMS_SERVICE_API_KEY=your_sms_api_key_here
CALENDLY_LINK=https://calendly.com/your-meeting-link

# Sender Information
DEFAULT_FROM_EMAIL=your_name@your_domain.com
DEFAULT_FROM_NAME=Your Name

2. Prepare Your CSV File

Your CSV file should include these columns:

• FirstName (required)
• LastName (optional)
• Company (required)
• WorkEmail (required if PersonalEmail not provided)
• PersonalEmail (required if WorkEmail not provided)
• Phone (optional, for future voice features)
• Industry (optional, helps with personalization)
• Title (optional, helps with personalization)

Example CSV:

FirstName,LastName,Company,WorkEmail,PersonalEmail,Phone,Industry,Title
John,Doe,Acme Corp,[email protected],[email protected],555-0123,Technology,CTO
Jane,Smith,Beta Inc,[email protected],,555-0456,Healthcare,VP Engineering

3. Send Your First Campaign

# Using CLI
lead-generator send leads.csv --template expansion --sender-name "Your Name"

# Or using the short alias
lg send leads.csv -t expansion

CLI Usage

Commands

Send Campaign

lead-generator send <csv-file> [options]

Options:
  --template, -t          Template ID or "random" (default: "random")
  --sender-name          Sender name
  --sender-email         Sender email
  --sender-title         Sender title (default: "Sales Director")
  --batch-size           Emails per batch (default: 300)
  --delay                Delay between batches in ms (default: 1000)
  --dry-run              Simulate without sending (default: false)
  --ai-personalization   Enable AI personalization (default: true)
  --output, -o           Save results to file

List Templates

lead-generator templates [options]

Options:
  --category, -c         Filter by category
  --tone                 Filter by tone
  --details, -d          Show template details

Validate CSV

lead-generator validate <csv-file> [options]

Options:
  --output, -o           Save validation report to file

Voice AI Cold-calling

# Start cold-calling campaign
lead-generator coldcall run <csv-file> [options]

Options:
  --script               Voice script template (default: "default")
  --batch-size          Number of calls per batch (default: 10)
  --delay               Delay between calls in seconds (default: 30)
  --dry-run             Simulate calling without making actual calls
  --output, -o          Save campaign results to file

# Check campaign status
lead-generator coldcall status [options]

Options:
  --campaign-id         Specific campaign ID to check
  --detailed, -d        Show detailed status information

# Generate call reports
lead-generator coldcall report [options]

Options:
  --campaign-id         Specific campaign ID to report on
  --output, -o          Output file for report (default: "call-report.csv")
  --format              Report format: csv or json (default: "csv")

Examples

# Send email campaign with specific template
lead-generator send leads.csv --template problem-solver --dry-run

# Start voice calling campaign
lead-generator coldcall run contacts.csv --batch-size 5 --delay 45

# Check status of specific campaign
lead-generator coldcall status --campaign-id abc123 --detailed

# Generate detailed call report
lead-generator coldcall report --format json --output call-results.json

# List all templates with details
lead-generator templates --details

# Validate CSV file
lead-generator validate leads.csv --output validation-report.json

# Send campaign and save results
lead-generator send leads.csv -t expansion -o campaign-results.json

Voice AI Cold-calling

Quick Start

# 1. Prepare CSV with phone numbers
# Required columns: Name, PhoneNumber, Email (optional)

# 2. Start cold-calling campaign
lead-generator coldcall run contacts.csv

# 3. Monitor campaign progress
lead-generator coldcall status

# 4. Generate detailed reports
lead-generator coldcall report --format json

CSV Format for Voice Calling

Your CSV file should include these columns for voice campaigns:

• Name (required) - Contact's full name
• PhoneNumber (required) - Phone number in international format (+1234567890)
• Email (optional) - For follow-up emails
• Company (optional) - Company name for personalization

Example CSV:

Name,PhoneNumber,Email,Company
John Doe,+1234567890,[email protected],Acme Corp
Jane Smith,+1987654321,[email protected],Beta Inc
Bob Johnson,+1555123456,[email protected],Gamma LLC

IVR System

The voice AI includes an interactive voice response (IVR) system:

• Press 1: Interested in learning more
  • Automatically sends SMS with Calendly link
  • Logs as "scheduled meeting" in analytics
• Press 2: Not interested / Opt out
  • Adds contact to do-not-call list
  • Logs as "opted out" in analytics

Webhook Server

The system includes a Hono.js webhook server that:

• Receives real-time callbacks from Bland.ai when calls complete
• Processes IVR responses automatically (Press 1/2 handling)
• Sends SMS messages with Calendly links for interested prospects
• Manages do-not-call lists for opt-outs
• Generates analytics and call statistics
• Logs all call outcomes to JSON files

Webhook Endpoints

• POST /webhook - Main Bland.ai callback endpoint
• GET /health - Health check
• GET /logs - Retrieve call logs
• GET /stats - Get call statistics
• DELETE /logs - Clear logs (testing)

Voice Campaign Analytics

Track comprehensive metrics:

• Answer Rate: Percentage of calls answered
• Conversion Rate: Percentage who pressed 1 (interested)
• Opt-out Rate: Percentage who pressed 2
• Average Call Duration: Mean call length
• Campaign ROI: Cost per interested prospect

Example analytics output:

{
  "total": 100,
  "answered": 65,
  "scheduledMeetings": 12,
  "optedOut": 8,
  "answerRate": "65.00%",
  "conversionRate": "18.46%",
  "averageDuration": 45
}

Node.js Module Usage

Basic Usage

import { LeadGenerator } from '@profullstack/lead-generator';

const generator = new LeadGenerator({
  mailgunApiKey: 'your-api-key',
  mailgunDomain: 'your-domain.com',
  openaiApiKey: 'your-openai-key',
  senderName: 'Your Name',
  senderEmail: '[email protected]'
});

// Run complete campaign
const results = await generator.runCampaign('leads.csv', {
  templateId: 'expansion',
  dryRun: false
});

console.log(`Sent ${results.sending.successful} emails`);

Quick Start Function

import { quickStart } from '@profullstack/lead-generator';

const results = await quickStart('leads.csv', {
  mailgunApiKey: 'your-api-key',
  mailgunDomain: 'your-domain.com',
  senderName: 'Your Name',
  senderEmail: '[email protected]',
  templateId: 'social-proof'
});

Voice AI Module Usage

import { BlandAIService, startWebhookServer } from '@profullstack/lead-generator';

// Initialize Bland.ai service
const blandService = new BlandAIService({
  apiKey: 'your-bland-ai-key',
  webhookUrl: 'https://your-domain.com/webhook'
});

// Start webhook server
const webhookServer = await startWebhookServer({
  port: 3001,
  calendlyLink: 'https://calendly.com/your-meeting'
});

// Process contacts for calling
const { validLeads } = await processLeadsFromCSV('contacts.csv', {
  requirePhone: true
});

// Start call campaign
const campaign = await blandService.startCallCampaign(validLeads, {
  batchSize: 10,
  delay: 30000, // 30 seconds between calls
  script: 'default'
});

console.log(`Campaign ${campaign.campaignId} started with ${campaign.totalCalls} calls`);

// Check campaign status
const status = await blandService.getCampaignStatus(campaign.campaignId);
console.log(`Campaign status: ${status.status}, completed: ${status.completed}`);

// Generate report
const report = await blandService.generateCampaignReport(campaign.campaignId);
console.log(`Answer rate: ${report.answerRate}%, Conversion rate: ${report.conversionRate}%`);

Webhook Server Usage

import { WebhookServer } from '@profullstack/lead-generator';

// Create webhook server
const server = new WebhookServer({
  port: 3001,
  logFile: './logs/call-outcomes.json',
  calendlyLink: 'https://calendly.com/your-meeting',
  smsApiKey: 'your-sms-api-key'
});

// Start server
await server.start();
console.log('Webhook server running on port 3001');

// Access call logs
const logs = server.callLogs;
console.log(`Total calls logged: ${logs.length}`);

// Get statistics
const stats = server.generateStats();
console.log(`Answer rate: ${stats.answerRate}%`);
console.log(`Conversion rate: ${stats.conversionRate}%`);

// Stop server when done
await server.stop();

Individual Module Usage

import {
  processLeadsFromCSV,
  personalizeTemplate,
  sendBatchEmails,
  getTemplateById,
  BlandAIService,
  WebhookServer
} from '@profullstack/lead-generator';

// Process CSV for email campaigns
const { validLeads } = await processLeadsFromCSV('leads.csv');

// Process CSV for voice campaigns (requires phone numbers)
const { validLeads: voiceLeads } = await processLeadsFromCSV('contacts.csv', {
  requirePhone: true
});

// Get template
const template = getTemplateById('expansion');

// Personalize emails
const personalizedEmails = await batchPersonalize(
  [template],
  validLeads,
  { name: 'Your Name', email: '[email protected]' }
);

// Send emails
const emailResults = await sendBatchEmails(emailsToSend, {
  apiKey: 'your-mailgun-key',
  domain: 'your-domain.com'
});

// Make voice calls
const blandService = new BlandAIService({ apiKey: 'your-bland-ai-key' });
const callResults = await blandService.startCallCampaign(voiceLeads, {
  batchSize: 5,
  delay: 45000
});

Available Templates

| ID | Name | Category | Tone | Use Case | |----|------|----------|------|----------| | expansion | Team Expansion Focus | growth | professional | When prospect is expanding | | problem-solver | Problem Solver | solution | consultative | Addressing pain points | | social-proof | Social Proof | social-proof | confident | Leveraging success stories | | curiosity | Curiosity Gap | curiosity | intriguing | Creating intrigue | | direct | Direct Value Prop | direct | straightforward | Clear value proposition | | question | Question-Based | engagement | conversational | Engaging with questions | | referral | Referral/Connection | referral | warm | Mutual connections | | urgency | Urgency/Scarcity | urgency | urgent | Time-sensitive offers | | insight | Industry Insight | insight | informative | Sharing insights | | follow-up | Follow-up | follow-up | respectful | Re-engagement |

Configuration

Environment Variables

# Mailgun Configuration (Email Campaigns)
MAILGUN_API_KEY=your_mailgun_api_key
MAILGUN_DOMAIN=your_mailgun_domain
MAILGUN_BASE_URL=https://api.mailgun.net

# OpenAI Configuration (AI Personalization)
OPENAI_API_KEY=your_openai_api_key
OPENAI_MODEL=gpt-4o-mini
OPENAI_MAX_TOKENS=500
OPENAI_TEMPERATURE=0.7

# Bland.ai Configuration (Voice Calling)
BLAND_AI_API_KEY=your_bland_ai_api_key
BLAND_AI_BASE_URL=https://api.bland.ai
VOICE_WEBHOOK_PORT=3001
VOICE_WEBHOOK_URL=https://your-domain.com/webhook

# Call Configuration
CALL_BATCH_SIZE=10
CALL_DELAY_SECONDS=30
CALL_HOURS_START=9
CALL_HOURS_END=17
CALL_TIMEZONE=America/New_York

# SMS & Calendly Configuration
SMS_SERVICE_API_KEY=your_sms_api_key
CALENDLY_LINK=https://calendly.com/your-meeting-link

# Email Configuration
[email protected]
DEFAULT_FROM_NAME=Your Name
[email protected]

# Batch Processing
BATCH_SIZE=300
BATCH_DELAY_MS=1000
MAX_RETRIES=3

# Features
PERSONALIZATION_ENABLED=true
DRY_RUN=false

Programmatic Configuration

const generator = new LeadGenerator({
  // Mailgun settings
  mailgunApiKey: 'your-key',
  mailgunDomain: 'your-domain.com',
  
  // OpenAI settings
  openaiApiKey: 'your-key',
  openaiModel: 'gpt-4',
  
  // Sender info
  senderName: 'Your Name',
  senderEmail: '[email protected]',
  senderTitle: 'Sales Director',
  
  // Campaign settings
  batchSize: 100,
  delay: 2000,
  enablePersonalization: true,
  trackOpens: true,
  trackClicks: true
});

API Reference

LeadGenerator Class

Constructor

new LeadGenerator(config)

Methods

• runCampaign(csvFilePath, options) - Run complete campaign
• validateConfig() - Validate configuration
• getTemplates(filters) - Get available templates
• previewEmail(templateId, leadData) - Preview personalized email

Functions

• quickStart(csvFilePath, config) - Quick campaign setup
• processLeadsFromCSV(filePath) - Process CSV file
• personalizeTemplate(template, leadData, senderInfo) - Personalize single template
• sendBatchEmails(emails, options) - Send email batch
• getTemplateById(id) - Get template by ID

Testing

Run the test suite:

# Run all tests
pnpm test

# Run specific test files
pnpm test:csv
pnpm test:email
pnpm test:ai

# Run with coverage
pnpm test --coverage

Development

Setup Development Environment

# Clone repository
git clone https://github.com/profullstack/lead-generator.git
cd lead-generator

# Install dependencies
pnpm install

# Copy environment file
cp .env.example .env

# Edit .env with your API keys

Project Structure

lead-generator/
├── bin/
│   └── lead-generator.js     # CLI entry point
├── src/
│   ├── templates/            # Email templates
│   ├── csv-parser.js         # CSV processing
│   ├── ai-service.js         # OpenAI integration
│   ├── email-service.js      # Mailgun integration
│   └── voice-service.js      # Voice AI stub
├── test/                     # Test files
├── index.js                  # Main module export
└── package.json

Contributing

1. Fork the repository
2. Create a feature branch
3. Write tests for new functionality
4. Implement the feature
5. Run tests and ensure they pass
6. Submit a pull request

Troubleshooting

Common Issues

"Mailgun API key is required"

• Ensure MAILGUN_API_KEY is set in your .env file
• Verify the API key is correct in your Mailgun dashboard

"No valid leads found"

• Check your CSV file format
• Ensure required columns (FirstName, Company) are present
• Verify at least one email field (WorkEmail or PersonalEmail) has valid data

"Rate limit exceeded"

• Increase the delay between batches with --delay option
• Reduce batch size with --batch-size option
• Check your Mailgun sending limits

AI personalization fails

• Verify OPENAI_API_KEY is set correctly
• Check your OpenAI account has sufficient credits
• Use --ai-personalization false to disable AI features

Debug Mode

Enable verbose logging:

lead-generator send leads.csv --verbose

License

MIT License - see LICENSE file for details.

Support

• 📧 Email: [email protected]
• 🐛 Issues: GitHub Issues
• 📖 Documentation: Full Documentation

Roadmap

• [ ] Voice AI implementation with Twilio
• [ ] CRM integrations (Salesforce, HubSpot)
• [ ] Advanced analytics and reporting
• [ ] A/B testing for templates
• [ ] Webhook support for email events
• [ ] Template builder UI
• [ ] Multi-language support