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Sender > Features > Email api
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Email API for Transactional & Programmatic Email Sending

Send emails from your app with Sender’s fast, scalable Email API. Trigger notifications, receipts, alerts, and automated workflows with low latency and dependable delivery.

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Email Deliverability
Join over 180,000 companies using Sender

API-first infrastructure built for developers

Trigger emails directly from your application logic—no dashboards or manual scheduling. The Email sending API offers full control through code, enabling precise, event-driven communication.

Globe & Web

Secure authentication & request signing

Built with modern security practices, Sender protects API requests and user data to ensure safe, dependable communication for any application.
Open Letter

High-speed message delivery engine

Our Email API service is optimized for speed, processing requests in milliseconds to ensure delivery without delays or queue bottlenecks.
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Consistent, predictable performance at scale

Built for high-volume workloads, the bulk Email API maintains stable performance—even during spikes—making it ideal for SaaS products, ecommerce platforms, and mobile apps.

Integrating email into your product doesn’t have to be a pain

With our RESTful Email API and libraries for all major programming languages, integrating email is quick and straightforward—whether sending transactional messages or high-volume campaigns.
Explore EMAIL API library

Developer tools that accelerate integration

Sender’s Email API runs on highly available infrastructure with real-time monitoring, automatic failover, and encrypted communications to maintain reliability for every application-triggered email.
Dedicated IPs on demand

Clean, well-documented REST endpoints

Endpoints follow predictable patterns and return structured JSON responses, making it easy to debug, validate requests, and integrate with any modern stack.
Suppression list management

Real-time webhook event delivery

Subscribe to delivery, bounce, open, click, and complaint events via webhooks. Build application-triggered emails, dashboards, or internal tools using accurate, real-time event data.
Automatic list cleaning

Detailed delivery logs & error handling

Access message logs, status codes, and error responses directly through the API error handling. Simplify debugging and gain full visibility into how your application sends emails
24/7 deliverability support

On-demand template rendering via API

Create and manage templates programmatically, apply dynamic variables, and render personalized email content at send-time for consistent branding across your application.
Feedback loop integrations

Automatic bounce & complaint processing

Sender handles bounce classification, complaint tracking, and list hygiene automatically so your application maintains high deliverability without any manual intervention.
High-reputation IP pools

Intelligent rate management & retry logic

Built-in rate control and automatic retry handling ensure high-volume workloads are processed smoothly, even during bursts or temporary network interruptions.

Easy integrations with popular tools

Website integration is a breeze with Sender. Connect instantly with leading content management systems, CRMs, and ecommerce platforms, including Wordpress, PrestaShop, WooCommerce, Zapier, and more.
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