AWS Email Service Integration - Complete

Summary

Integrated AWS SES EmailService into BrightChain auth system for welcome emails on registration.

Changes Made

1. AuthService Updated

  • Added EmailService dependency
  • Added sendWelcomeEmail() private method
  • Sends welcome email after successful registration with:
    • Subject: “Welcome to BrightChain”
    • Mentions 1000 Joules trial credit
    • HTML and plain text versions

2. Application Startup

  • Initialize EmailService from @brightchain/brightchain-api-lib
  • Pass to AuthService constructor
  • Uses existing AWS SES configuration from environment

Email Service Features

The existing EmailService class provides:

  • AWS SES integration via @aws-sdk/client-ses
  • HTML and plain text email support
  • Debug mode for development
  • Disable flag for testing
  • Verified sender email requirement

Configuration Required

Add to .env:

# JWT
JWT_SECRET=your-secret-key-here

# AWS SES
AWS_REGION=us-east-1
AWS_ACCESS_KEY_ID=your-access-key
AWS_SECRET_ACCESS_KEY=your-secret-key
EMAIL_SENDER=noreply@brightchain.io
DISABLE_EMAIL_SEND=false  # Set to true for development
DEBUG=true

Welcome Email Content

Subject: Welcome to BrightChain

Text:

Welcome {username}!

Your account has been created successfully. You've been credited with 1000 Joules to get started.

Best regards,
The BrightChain Team

HTML:

<h1>Welcome to BrightChain!</h1>
<p>Hi {username},</p>
<p>Your account has been created successfully.</p>
<p><strong>You've been credited with 1000 Joules to get started.</strong></p>
<p>Best regards,<br/>The BrightChain Team</p>

Error Handling

  • Email failures are logged but don’t block registration
  • User still gets JWT token and energy credits
  • Graceful degradation if SES is unavailable

Testing

With Email Disabled 

DISABLE_EMAIL_SEND=true yarn start

With Email Enabled

  1. Verify sender email in AWS SES
  2. Set AWS credentials in .env
  3. Register new user
  4. Check email inbox

Future Enhancements

  1. Email verification flow
  2. Password reset emails
  3. Energy balance notifications
  4. Transaction receipts
  5. Email templates system
  6. Unsubscribe management

Files Modified

  • brightchain-api/src/services/auth.ts - Added EmailService integration
  • brightchain-api/src/application.ts - Initialize EmailService

Status

✅ EmailService integrated ✅ Welcome email on registration ✅ Error handling implemented ✅ Configuration documented ⚠️ AWS SES setup required ⚠️ Sender email verification needed ⚠️ Email templates could be improved