Email Validator Pro 📧

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Advanced email validation actor for Apify platform with comprehensive verification capabilities including SMTP verification, MX record checks, and disposable email detection.

🚀 Features

• 📝 Format Validation: RFC 5322 compliant email format checking
• 🌐 MX Records Check: Validates domain has valid mail exchange records
• ✉️ SMTP Verification: Real-time email existence verification via SMTP
• 🔍 Provider Detection: Identifies free and disposable email providers
• 💡 Smart Suggestions: Suggests corrections for common domain typos
• ⚡ Batch Processing: Efficiently processes large email lists
• 🛡️ Rate Limiting: Built-in delays to prevent abuse
• 📊 Detailed Reporting: Comprehensive validation results and statistics

📋 Input Configuration

Required Fields

• emails (array): List of email addresses to validate

Optional Settings

• checkSMTP (boolean, default: true): Enable SMTP verification
• rejectDisposable (boolean, default: false): Mark disposable emails as invalid
• batchSize (integer, default: 50): Number of emails per batch (1-100)
• delayBetweenChecks (number, default: 0.1): Delay between validations in seconds
• maxRetries (integer, default: 2): Maximum retry attempts for SMTP connections
• timeout (integer, default: 10): SMTP connection timeout in seconds

📤 Output Format

Each email validation returns a detailed result object:

{
"email":"user@example.com",
"original_email":"User@Example.com",
"is_valid":true,
"valid_format":true,
"valid_mx":true,
"valid_smtp":true,
"is_free":false,
"is_disposable":false,
"domain":"example.com",
"errors":[],
"warnings":[],
"suggestions":[],
"mx_records":["10:mail.example.com"],
"smtp_response":"250 OK",
"validation_time":1642789123.456
}

Final Summary Object

{
"summary":true,
"total_emails":1000,
"valid_emails":847,
"invalid_emails":153,
"free_emails":234,
"disposable_emails":12,
"validation_rate":84.7,
"processing_time_seconds":45.2,
"emails_per_second":22.1,
"common_errors":{
"Invalid email format":89,
"Domain has no MX records":34,
"Email address does not exist":30
},
"options_used":{...},
"checks_performed":[...]
}

🎯 Use Cases

Marketing & Lead Generation

• Email List Cleaning: Remove invalid emails before campaigns
• Lead Qualification: Verify prospect contact information
• Bounce Rate Reduction: Improve email deliverability rates

E-commerce & SaaS

• User Registration: Validate emails during signup
• Account Recovery: Ensure password reset emails reach users
• Newsletter Management: Clean subscriber lists

Data Quality & Compliance

• Database Maintenance: Regular email list hygiene
• GDPR Compliance: Verify contact consent accuracy
• CRM Integration: Enhance customer data quality

🛠️ Technical Details

Validation Process

1. Format Check: RFC 5322 regex validation
2. Domain Extraction: Parse email domain
3. Provider Classification: Check against free/disposable lists
4. MX Records: DNS lookup for mail exchange records
5. SMTP Verification: Connect to mail server and verify recipient
6. Result Compilation: Generate comprehensive validation report

Supported Email Providers

Free Providers (200+)

• Gmail, Yahoo, Outlook, Hotmail, AOL
• iCloud, Protonmail, Yandex, Mail.ru
• And many more regional providers

Disposable Providers (100+)

• 10minutemail, Tempmail, Guerrillamail
• Mailinator, YOPmail, Maildrop
• Comprehensive list of temporary email services

Performance & Limits

• Throughput: Up to 50+ emails/second (depending on SMTP response times)
• Batch Processing: Configurable batch sizes (1-100 emails)
• Rate Limiting: Customizable delays to prevent blocking
• Retry Logic: Automatic retries for failed connections
• Timeout Handling: Configurable connection timeouts

🚨 Important Notes

SMTP Verification Considerations

• Rate Limits: Some mail servers implement rate limiting
• False Positives: Yahoo and some providers may return positive responses for non-existent emails
• Temporary Failures: Network issues may cause temporary validation failures
• Privacy: SMTP checks involve connecting to external mail servers

Best Practices

1. Start Small: Test with small batches first
2. Monitor Results: Check for high error rates or timeouts
3. Respect Limits: Use appropriate delays between checks
4. Handle Failures: Plan for temporary network issues
5. Regular Updates: Disposable provider lists change frequently

📊 Example Usage

Basic Email Validation

{
"emails":[
"user@gmail.com",
"test@example.com",
"invalid@nonexistent.xyz"
]
}

Advanced Configuration

{
"emails":["user1@example.com","user2@test.com"],
"checkSMTP":true,
"rejectDisposable":true,
"batchSize":25,
"delayBetweenChecks":0.2,
"maxRetries":3,
"timeout":15
}

Large Scale Processing

{
"emails":[...],// 10,000+ emails
"checkSMTP":false,// Faster processing
"batchSize":100,
"delayBetweenChecks":0.05
}

🔧 Error Handling

The actor handles various error scenarios gracefully:

• Invalid Input: Clear error messages for malformed input
• Network Issues: Retry logic for temporary failures
• Rate Limiting: Automatic backoff and retry
• Server Errors: Detailed error reporting and logging
• Timeout Handling: Configurable timeouts with fallback

📈 Performance Optimization

Speed vs Accuracy Trade-offs

• Fast Mode: Disable SMTP checking for format/MX validation only
• Balanced Mode: Default settings with moderate SMTP verification
• Thorough Mode: Enable all checks with retries for maximum accuracy

Batch Size Recommendations

• Small Lists (< 100): Batch size 10-25
• Medium Lists (100-1000): Batch size 25-50
• Large Lists (1000+): Batch size 50-100

🆘 Support & Troubleshooting

Common Issues

1. High Invalid Rate: Check for data quality issues in input
2. Slow Processing: Reduce batch size or increase delays
3. SMTP Timeouts: Increase timeout values or reduce retries
4. Memory Issues: Process very large lists in smaller chunks

Getting Help

• Check actor logs for detailed error information
• Review input format and configuration options
• Contact Apify support for platform-specific issues

📄 License & Terms

This actor is provided as-is for email validation purposes. Users are responsible for:

• Complying with applicable data protection laws
• Respecting email provider terms of service
• Using validated data ethically and legally
• Maintaining data security and privacy

🏷️ Tags

email validation smtp mx-records verification email-checker disposable-email bulk-validation data-quality lead-generation

Built with ❤️ for the Apify platform