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Transactional Email API

Deliver Every Email,Deliver Every Email

MailCub provides a robust transactional email API designed for SaaS applications, ecommerce platforms, and business apps. With global delivery infrastructure, real-time event tracking, webhook support, and advanced deliverability monitoring, your emails reach inboxes fast and reliably.

Everything You Need for Effortless Transactional Email

Powerful tools built to deliver your messages instantly, whether you’re sending password resets, order confirmations, or onboarding emails. Reliable, secure, and ready to scale with you.

Lightning-Fast Delivery

Get your transactional emails delivered in seconds, powered by MailCub’s globally distributed infrastructure.

Secure & Compliant

Protect your data with built-in encryption, authentication, and compliance with GDPR and major privacy standards.

Detailed Analytics

Track every send, open, and bounce in real-time with clear, actionable insights to improve your performance.

Developer-Friendly API

Simple, well-documented REST API that integrates in minutes — whether you use Node, Python, PHP, or Go.

Global Infrastructure

Worldwide delivery network for optimal performance

Webhook Support

Real-time event notifications for complete visibility

Perfect for Every Business Need

Whether you’re running an online store, a service brand, or a growing enterprise, our platform helps you connect with your customers through powerful, automated email experiences that drive engagement and trust.

Welcome Emails

Create a lasting first impression with personalized welcome messages that make new customers feel valued and inspired to take the next step.

Password Resets

Provide quick and secure password recovery options that show your customers you care about their safety and convenience.

Order Confirmations

Keep every customer in the loop with automatic order updates, receipts, and delivery notifications — clear communication builds loyalty.

Notifications

Send real-time alerts, reminders, and important updates that keep your customers engaged and informed at every touchpoint.

Invoices

Automate your billing process with professional invoices and payment confirmations save time while maintaining accuracy and transparency.

Marketing Automation

Nurture customer relationships with smart, data-driven campaigns that adapt to behavior and deliver the right message at the right time.

Seamless Integration for Every Business

Get started in minutes with our developer-friendly API. Whether you're sending emails or running automation, the platform integrates smoothly with your applications to keep communication flowing.

Integrate seamlessly with our RESTful APIs and start sending emails in just a few lines of code minimal setup, maximum reliability.
Empower your tech team with SDKs for popular languages, real-time testing environments, and clear, comprehensive documentation designed to speed up development.
Stay in control with detailed delivery tracking, performance analytics, and complete visibility into every request and email log.
From authentication to first send, our intuitive setup ensures your integration is quick, secure, and ready to scale as your business grows.

Every Timecurl -X POST https://api.mail.mailcub.com/api/send_email \

-H "Content-Type: application/json" \

-H "x-sh-key: YOUR_API_KEY" \

-d '{

"to": "user@example.com",

"from": "noreply@yourapp.com",

"subject": "Welcome to our service!",

"html": "Welcome! Thanks for signing up.",

"attachment": file }'

Transparent Pricing

Start free and scale as you grow. No hidden fees, no surprise