Professional email delivery with high deliverability, advanced security, and easy integration.

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What is SMTP Relay?

SMTP Relay is a professional email delivery service that ensures your emails reach recipients quickly and securely without being caught in spam filters. Instead of sending through your own servers, achieve a 99%+ deliverability rate using our optimized infrastructure.

Why Choose Our SMTP Relay Service?

High Deliverability Rate

99.9% uptime guarantee
Whitelisted IP addresses
SPF, DKIM, DMARC support
Reputation management

Robust Infrastructure

10,000+ emails processed per second
Global server network
Automatic load balancing
Redundant systems

Advanced Security

SSL/TLS encryption
IP whitelisting
2FA authentication
DDoS protection

Easy Integration

SDKs for all programming languages
REST API support
SMTP protocol compatibility
Comprehensive documentation

Who Is the SMTP Relay Service For?

E-commerce Websites

Order confirmations, shipping notifications

SaaS Applications

User notifications, system alerts

Corporate Companies

Mass communication, internal correspondence

Marketing Agencies

Campaign emails, newsletters

Software Developers

Transactional e-mails

Financial Institutions

Account notifications, transaction approvals

Technical Details and Capabilities

Protocol and Connection

Protocol Support: SMTP, SMTPS, SMTP-AUTH

Port Options: 25, 587, 465, 2525

Message Formats: HTML, Plain Text, Multipart

Attachment Size: Up to 25MB

Advanced Features

Bounce Management: Automatic bounce handling

Webhook Support: Real-time event notifications

Rate Limiting: Flexible sending rate settings

Batch Processing: Bulk sending support

Tracking and Reporting

Email Delivery Status Tracking

Open and Click Rates

Geographical Distribution Analysis

Downloadable Reports

3-Step Quick Start

1

Account Creation

Sign up and get your API key. No credit card required.

2

Configuration

Update your SMTP settings or integrate our API.

3

Sending

Send your first email and track delivery reports.

Your Data Is Secure

GDPR Compliant

Compliant with European data protection standards

ISO 27001

Information Security Management Certification

İYS Compliant

Compliance with the Turkish Message Management System (İYS)

Encryption

256-bit SSL/TLS Encryption

Frequently Asked Questions

SMTP Relay is an optimized service for professional email delivery. Unlike regular email servers, it is designed for high-volume sending, offers advanced features to bypass spam filters, and provides detailed reporting.
It is compatible with all email clients and applications that support the SMTP protocol. This includes popular clients such as Outlook, Gmail, and Thunderbird, as well as programming libraries like PHPMailer, Nodemailer, and Python smtplib.
We continuously monitor our IP reputation, track bounces and spam complaints, and prevent malicious usage. In addition, we properly configure SPF, DKIM, and DMARC records to enhance delivery quality.

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14-day free trial • No credit card required • Instant activation

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