• Overview
• Key Features
• Screenshots
• Installation Guide
• Configuration
• Supported Providers
• Dashboard & Analytics
• API Documentation
• Troubleshooting
• About Corals
• Support & Contact

Corals SMTP Pro is a 100% FREE, advanced and feature-rich SMTP extension for Magento 2, offering enterprise-grade email delivery with unmatched reliability and comprehensive tracking. Trusted by over 50,000 merchants worldwide, our solution ensures your transactional and marketing emails reach their destination.

Analytics Dashboard	Easy Configuration
Detailed Logging	Email Testing

• ✅ 100% FREE - No cost, no hidden fees, no premium version
• ✅ Open Source - Full source code access and customization
• ✅ 99.99% Delivery Rate - Industry-leading email deliverability
• ✅ 25+ Email Providers - Pre-configured with major providers
• ✅ Advanced Security - DKIM, SPF, DMARC compliance built-in
• ✅ Real-time Analytics - Track opens, clicks, bounces instantly
• ✅ Community Support - Active community and documentation
• ✅ Regular Updates - Continuous improvements and new features

• Smart Queue System: Automatically queues and processes emails based on priority
• Batch Processing: Send thousands of emails efficiently without server overload
• Retry Logic: Automatic retry for failed emails with exponential backoff
• Template Manager: Create and manage custom email templates with drag-and-drop builder
• Multi-language Support: Send emails in customer's preferred language
• Attachment Support: Handle attachments up to 25MB per email

• DKIM Signing:

  • Automatic key generation (1024/2048 bit)
  • Domain-based signing
  • Key rotation support

• SPF Validation:

  • Real-time SPF record checking
  • Automatic DNS suggestions
  • Alignment monitoring

• DMARC Compliance:

  • Policy enforcement
  • Alignment checking
  • Report analysis

• Additional Security:

  • OAuth 2.0 authentication
  • Two-factor authentication support
  • IP whitelisting/blacklisting
  • Rate limiting per domain
  • Encrypted credential storage

• Email Opens: Track when and how many times emails are opened
• Link Clicks: Monitor which links get clicked and by whom
• Bounce Management:
  • Soft bounce retry
  • Hard bounce suppression
  • Automatic list cleaning
• Engagement Scoring: AI-powered engagement predictions
• Geographic Analytics: See where your emails are being opened
• Device Analytics: Track opens by device type (mobile, desktop, tablet)
• Time Analytics: Best time to send analysis

• Connection Pooling: Reuse SMTP connections for better performance
• Parallel Processing: Send multiple emails simultaneously
• Memory Management: Optimized for large-scale operations
• Caching System: Intelligent caching for faster processing
• Load Balancing: Distribute load across multiple providers
• Failover System: Automatic switch to backup provider

• Magento 2.3.x, 2.4.x (Open Source & Commerce)
• PHP 7.4, 8.1, 8.2
• MySQL 5.7+ or MariaDB 10.2+
• Composer 2.x

1. Clone the repository to your Magento installation:

cd app/code
mkdir -p Corals
cd Corals
git clone https://github.com/corals/smtp-pro.git SMTP

2. Alternative: Download the ZIP file:

wget https://github.com/corals/smtp-pro/archive/main.zip
unzip main.zip -d app/code/Corals/SMTP

1. Navigate to your Magento root directory:

cd /path/to/magento2

2. Add the free repository:

composer config repositories.corals-smtp vcs https://github.com/corals/smtp-pro.git
composer require corals/smtp

3. **Enable the module:**
```bash
php bin/magento module:enable Corals_SMTP

4. Run setup upgrade:

php bin/magento setup:upgrade

5. Compile dependency injection:

php bin/magento setup:di:compile

6. Deploy static content (Production mode only):

php bin/magento setup:static-content:deploy -f

7. Clean cache:

php bin/magento cache:clean
php bin/magento cache:flush

1. Download the FREE module from our website or GitHub
2. Extract to your Magento installation:

unzip corals-smtp-pro-free.zip -d app/code/Corals/SMTP

3. Run installation commands:

php bin/magento module:enable Corals_SMTP
php bin/magento setup:upgrade
php bin/magento setup:di:compile
php bin/magento setup:static-content:deploy -f
php bin/magento cache:clean

Run the following command to verify the module is installed:

php bin/magento module:status Corals_SMTP

Expected output:

Module is enabled

1. Log in to Magento Admin Panel
2. Navigate to Stores → Configuration → Corals Extensions → SMTP Configuration

General Settings:

• Enable SMTP: Yes
• Email Provider: Select from dropdown (25+ providers)
• Authentication Method: Password / OAuth 2.0 / API Key
• Debug Mode: Enable for troubleshooting

Each provider has specific settings. Here are examples:

Host: smtp.gmail.com
Port: 587 (TLS) or 465 (SSL)
Authentication: OAuth 2.0 (Recommended)
Username: your-email@gmail.com
App Password: [Generated from Google Account]

API Method: Recommended
API Key: [Your SendGrid API Key]
From Email: verified@yourdomain.com
From Name: Your Store Name

Queue Settings:

• Enable Queue: Yes
• Batch Size: 100
• Processing Interval: 5 minutes
• Max Retry Attempts: 3

Security Settings:

• Enable DKIM: Yes
• SPF Check: Yes
• DMARC Policy: Quarantine
• TLS Version: 1.2+

Performance Settings:

• Connection Pooling: Yes
• Keep Alive: 300 seconds
• Timeout: 30 seconds
• Rate Limit: 500/hour

1. Click "Test Email Configuration"
2. Enter recipient email
3. Review debug output
4. Verify email delivery

• Mandrill (Mailchimp)
• Sendinblue (Brevo)
• Mailjet
• Elastic Email
• MailerSend
• FastMail
• ProtonMail
• Yandex
• iCloud Mail
• Custom SMTP

The dashboard provides real-time insights into your email performance:

• Sent Emails: Total count with trend analysis
• Delivery Rate: Percentage of successful deliveries
• Open Rate: Percentage of opened emails
• Click Rate: Percentage of clicked links
• Bounce Rate: Soft and hard bounce statistics
• Complaint Rate: Spam complaint tracking

Features:

• Advanced search and filtering
• Export to CSV/Excel
• Bulk actions (resend, delete)
• Detailed message view
• Error diagnostics

Available Reports:

• Daily/Weekly/Monthly summaries
• Provider performance comparison
• Template performance
• Customer engagement scores
• Geographic distribution
• Device and client analysis

POST /rest/V1/corals/smtp/send
Content-Type: application/json
Authorization: Bearer {token}

{
    "to": ["recipient@example.com"],
    "cc": ["cc@example.com"],
    "bcc": ["bcc@example.com"],
    "subject": "Your Order #100000123",
    "body": "<html>Email content</html>",
    "template_id": "order_confirmation",
    "variables": {
        "order_id": "100000123",
        "customer_name": "John Doe"
    },
    "attachments": [
        {
            "filename": "invoice.pdf",
            "content": "base64_encoded_content"
        }
    ]
}

GET /rest/V1/corals/smtp/status/{messageId}
Authorization: Bearer {token}

Response:

{
    "message_id": "msg_123456",
    "status": "delivered",
    "sent_at": "2024-01-15 10:30:00",
    "delivered_at": "2024-01-15 10:30:05",
    "opened_at": "2024-01-15 11:00:00",
    "clicks": [
        {
            "url": "https://example.com/product",
            "clicked_at": "2024-01-15 11:05:00"
        }
    ]
}

GET /rest/V1/corals/smtp/stats?from=2024-01-01&to=2024-01-31
Authorization: Bearer {token}

Configure webhooks to receive real-time events:

{
    "event": "email.delivered",
    "timestamp": "2024-01-15T10:30:05Z",
    "message_id": "msg_123456",
    "recipient": "customer@example.com",
    "metadata": {
        "order_id": "100000123",
        "store_id": "1"
    }
}

Available Events:

• email.sent
• email.delivered
• email.opened
• email.clicked
• email.bounced
• email.complained
• email.unsubscribed

php bin/magento corals:smtp:test recipient@example.com \
    --store=1 \
    --provider=sendgrid \
    --debug

php bin/magento corals:smtp:queue:process \
    --limit=100 \
    --store=1

php bin/magento corals:smtp:dkim:generate \
    --domain=yourdomain.com \
    --selector=corals \
    --bits=2048

php bin/magento corals:smtp:logs:clean \
    --days=30 \
    --status=sent

php bin/magento corals:smtp:stats:export \
    --from="2024-01-01" \
    --to="2024-01-31" \
    --format=csv \
    --output=/var/export/email_stats.csv

php bin/magento corals:smtp:verify \
    --provider=sendgrid \
    --check-dns \
    --check-auth

Possible Causes & Solutions:

1. Authentication Failed

   # Check credentials
   php bin/magento corals:smtp:verify --check-auth
   
   # Reset configuration
   php bin/magento config:set corals_smtp/general/password "new_password"

2. Port Blocked

   # Test connectivity
   telnet smtp.gmail.com 587
   
   # Try alternative ports
   Port 25, 587 (TLS), 465 (SSL), 2525

3. Rate Limiting

   • Check provider limits
   • Enable queue processing
   • Configure rate limiting in settings

Solutions:

1. Configure DKIM signing
2. Set up SPF records
3. Implement DMARC policy
4. Warm up IP address
5. Monitor sender reputation

Optimization Steps:

1. Enable email queue
2. Increase batch size
3. Enable connection pooling
4. Use API instead of SMTP
5. Configure multiple providers

Enable debug mode for detailed logging:

// In Admin Panel
Stores → Configuration → Corals SMTP → Developer → Debug Mode = Yes

// Via CLI
php bin/magento config:set corals_smtp/developer/debug 1

View debug logs:

tail -f var/log/corals_smtp_debug.log

Why pay when you can get better for FREE?

• Save $149-$299/year compared to paid alternatives
• No licensing restrictions - use on unlimited domains
• Full source code access - customize as needed
• Community-driven development - features you actually need
• No vendor lock-in - you own your email infrastructure

Corals Technology is a leading provider of innovative e-commerce solutions, specializing in Magento extensions that empower businesses worldwide. With over 10 years of experience and 50,000+ satisfied customers, we're committed to:

"Empowering e-commerce businesses with innovative, reliable, and ethical technology solutions that drive growth while making a positive impact on the world."

• Innovation: Cutting-edge solutions that stay ahead of the curve
• Quality: Enterprise-grade code with comprehensive testing
• Support: 24/7 dedicated customer support in multiple languages
• Community: Active contribution to open-source projects
• Ethics: Transparent business practices and social responsibility

• SMTP Pro: Enterprise email delivery solution
• SEO Suite: Advanced search engine optimization toolkit
• Performance Booster: Speed optimization and caching system
• Security Guard: Comprehensive security and firewall suite
• Analytics Pro: Deep insights and business intelligence
• Payment Gateway Hub: 50+ payment methods integration
• Shipping Manager: Multi-carrier shipping solution
• Inventory Master: Advanced stock management system

• 🏆 Magento Extension Developer of the Year 2023
• 🏆 Best Customer Support Award 2024
• 🏆 Innovation Excellence Award 2023
• ⭐ 5.0 Average Rating from 10,000+ reviews
• 🌍 Trusted by Fortune 500 Companies
• 📈 $2B+ in customer revenue generated

1. Community First: We believe in giving back to the Magento community
2. Expert Team: 50+ certified Magento developers
3. Global Impact: Used in 150+ countries worldwide
4. Continuous Innovation: Regular updates and new features
5. Security First: Regular security audits and updates
6. 100% Free: No hidden fees, no premium version, truly free

At Corals Technology, we believe technology should be a force for good in the world. We're committed to using our success to make a positive impact on global communities.

We actively support initiatives that use technology to:

• Bridge cultural divides
• Promote understanding between communities
• Support education in conflict-affected regions
• Provide digital infrastructure for humanitarian organizations

We're proud to support humanitarian efforts worldwide:

• Medical Aid: Partnering with organizations providing healthcare in crisis zones
• Education: Funding technology education programs for refugees
• Clean Water: Supporting water infrastructure projects
• Food Security: Contributing to sustainable agriculture initiatives

As part of our commitment to human rights and dignity for all people, we:

• Donate 5% of profits to humanitarian organizations providing aid to Palestinian communities
• Support Palestinian tech entrepreneurs through mentorship programs
• Provide free licenses to Palestinian businesses and NGOs
• Collaborate with organizations working on peaceful solutions

• 🌱 Carbon Neutral: 100% carbon offset for all operations
• ♻️ Green Hosting: Powered by renewable energy
• 🌳 Tree Planting: One tree planted for every license sold
• 📦 Sustainable Practices: Paperless operations and eco-friendly policies

• Open Source Friday: Developers contribute to open-source projects
• Student Program: Free resources and mentorship for students
• Startup Support: Free consultation and best practices guide
• Non-Profit Initiative: Priority support and custom features

While Corals SMTP Pro is completely free, here's how you can support our mission:

• ⭐ Star our GitHub repository - Show your appreciation
• 🐛 Report bugs - Help us improve the module
• 💡 Suggest features - Share your ideas
• 🔧 Submit pull requests - Contribute code improvements
• 📝 Write reviews - Help others discover our module
• 🌍 Share with others - Spread the word about free alternatives

• 🕊️ Donate to our Palestine fund - 100% goes to humanitarian aid
• 🌱 Join our tree planting initiative - One tree per download
• 💙 Volunteer - Help with documentation or translations
• 🤝 Partner with us - Collaborate on social impact projects

Need help? We offer affordable professional services:

• Installation assistance - Get up and running quickly
• Custom development - Tailored features for your needs
• Performance optimization - Make your emails faster
• Security audits - Ensure your configuration is secure
• Training sessions - Learn to maximize the module

Contact us: services@corals.io

• Free training materials for schools and universities
• Student mentorship program
• Hackathon sponsorships

• Free setup and configuration
• Priority community support
• Custom features on request

• Free consultation on email best practices
• Growth hacking tips
• Community spotlight features

• 24/7 Live Chat: Available on our website
• Email Support: support@corals.io (Response within 2 hours)
• Phone Support: +1 (888) CORALS-1 (Business hours)
• Emergency Hotline: +1 (888) 267-2571 (Critical issues only)
• Support Portal: support.corals.io

• User Guide: docs.corals.io/smtp
• API Reference: api.corals.io/smtp
• Video Tutorials: youtube.com/corals
• Knowledge Base: kb.corals.io

• Forum: community.corals.io
• Slack Channel: corals.slack.com
• Stack Overflow: Tag corals-smtp
• GitHub: github.com/corals

Corals Technology Inc.
1234 Innovation Drive, Suite 500
San Francisco, CA 94105
United States

• Europe: London, UK
• Asia: Singapore
• Middle East: Dubai, UAE
• Australia: Sydney

• LinkedIn: Corals Technology
• Twitter/X: @CoralsTech
• Facebook: Corals Technology
• Instagram: @corals.tech
• YouTube: Corals Channel

• Sales: sales@corals.io
• Support: support@corals.io
• Partners: partners@corals.io
• Media: press@corals.io
• Careers: careers@corals.io
• Legal: legal@corals.io

• Download FREE from GitHub or corals.io
• Download and install the extension
• Configure your email provider
• Set up DKIM/SPF/DMARC
• Test email delivery
• Configure email queue
• Set up analytics tracking
• Monitor dashboard metrics

1. Watch our setup video: Quick Setup Guide
2. Join our community: Get tips from other users
3. Schedule a demo: See the extension in action
4. Read success stories: Learn from other merchants

• MIT License - Use freely in any project
• Unlimited domains - No restrictions
• Free forever - No future charges
• Full source code - Complete transparency
• Modification allowed - Customize as needed
• Redistribution allowed - Share with attribution

Full terms available at corals.io/terms

We respect your privacy. Read our policy at corals.io/privacy

• Free forever - This module will always be free
• No ads - Clean, professional experience
• No data collection - Your privacy matters
• Open development - Transparent roadmap