Enterprise SMTP Relay

The most reliable way to send transactional and bulk emails from your existing infrastructure.

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SMTP Without the Headaches

Seamless Integration

Works with any system that speaks SMTP - no code changes required. Replace your current SMTP server in minutes.

Intelligent Routing

Our smart routing system automatically selects the best delivery path based on real-time network conditions.

Self-Healing Delivery

Automatic retries with exponential backoff when encountering temporary delivery issues.

Built for Technical Complexity

Supporting every SMTP scenario your business requires.

Encryption

  • STARTTLS
  • SSL/TLS
  • Perfect Forward Secrecy

Authentication

  • SMTP AUTH
  • IP Allowlisting
  • Client Certificates

Validation

  • SPF Alignment
  • DKIM Signing
  • DMARC Reporting

Advanced

  • 8BITMIME
  • CHUNKING
  • Pipelining

Painless Migration

1

Configuration Analysis

Our team reviews your current SMTP setup and provides migration recommendations.

2

Parallel Testing

Route copies of your emails through our servers while maintaining your existing flow.

3

Cutover Support

We provide live assistance during your production migration window.

4

Post-Migration Optimization

Continuous monitoring and tuning of your SMTP configuration.

Your Legacy System
DeveloperLabs.email
98%
of migrations complete in under 2 hours

Universal Compatibility

Works with every platform and programming language that supports SMTP.

Microsoft Ecosystem

Exchange Server Configuration

Send Connector:
- Smart Host: smtp.developerlabs.email
- Port: 587
- Authentication: Basic Auth
- Encryption: STARTTLS

Linux/Unix Systems

Postfix Configuration

relayhost = [smtp.developerlabs.email]:587
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
smtp_tls_security_level = encrypt

Programming Languages

PHP.ini Settings

[mail function]
SMTP = smtp.developerlabs.email
smtp_port = 587
auth_username = your_username
auth_password = your_password
smtp_secure = tls

Applications

WordPress wp-config.php

define('SMTP_HOST', 'smtp.developerlabs.email');
define('SMTP_PORT', 587);
define('SMTP_SECURE', 'tls');
define('SMTP_AUTH', true);
define('SMTP_USER', 'your_username');
define('SMTP_PASS', 'your_password');

Enterprise Features

Advanced capabilities for large-scale email operations.

Dedicated IP Pools

Isolate your sending reputation with dedicated IP addresses tailored to your volume.

Traffic Shaping

Automatically adjust sending rates based on recipient domain feedback loops.

Custom TLS Policies

Enforce specific TLS versions and cipher suites for compliance requirements.

Volume Thresholds

Receive alerts when your sending patterns deviate from established baselines.

Multi-Region Routing

Route emails through specific geographic locations for data residency compliance.

Smart Throttling

Automatically slow down sending when engagement metrics drop unexpectedly.

Ready to Modernize Your Email Infrastructure?

Our SMTP relay service delivers the reliability of enterprise solutions with the simplicity of cloud services.

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