Sent API

Build intelligent multi-channel messaging into your applications with the Sent API – designed for developers who need reliable, scalable communication solutions.

Quick Start

Get up and running with the Sent API in just a few minutes. This section covers the essentials to send your first message through our intelligent multi-channel platform.

🚀 New to Sent? Follow our comprehensive Getting Started Tutorial for a complete walkthrough with examples, best practices, and integration patterns.

Sent API Base URL

https://api.sent.dm

Authentication

The Sent API uses header-based authentication with two required credentials for every request:

x-sender-id: YOUR_SENDER_ID
x-api-key: YOUR_API_KEY

Required Headers:

x-sender-id: Your unique sender/customer identifier
x-api-key: Your secret API key for authentication

👉 Need API credentials? Visit your Sent Dashboard to generate your API keys.

Security Notes:

API keys are sensitive - never expose them in client-side code
Use environment variables to store credentials securely
Rotate keys regularly for enhanced security

📚 Full Guide: See our complete Authentication Documentation for security best practices, key management, and troubleshooting.

Ready? Explore the Sent Public API

Master the fundamental building blocks of the Sent messaging ecosystem.

💬 Messages API

Send intelligent multi-channel messages with automatic routing, fallback strategies, and real-time delivery tracking.

📞 Contacts API

Manage contact lifecycle with automatic channel discovery, preference tracking, and global phone number validation.

📝 Templates API

Create, manage, and deploy pre-approved message templates for WhatsApp Business and other regulated channels.

Try with Postman

Import our complete API collection and start testing immediately with pre-configured requests and environments:

Run in Postman: Directly fork Postman API Collection to your workspace

Import Collection: Open collection in Postman for manual import

Authentication & Security

Authentication Guide

API key management, authentication methods, security best practices, and access control patterns.

Rate Limits

API rate limiting policies, quota management, and optimization strategies for high-volume applications.

API Reference Documentation

Deep-dive into schemas, error handling, and advanced integration patterns.

Data Models

Complete request and response schemas, field definitions, and data validation rules for all API endpoints.

Error Handling

HTTP status codes, error response formats, and best practices for robust error handling in your applications.

Error Catalog

Comprehensive troubleshooting guide with specific error codes, root causes, and step-by-step remediation instructions.

Integration Guides

Learn how to integrate Sent into your specific use case with detailed guides and examples.

Message Integration

Complete guide to message sending patterns, channel optimization, and delivery best practices.

Contact Management

Advanced contact management strategies, segmentation patterns, and preference handling.

Template Management

Template creation workflows, approval processes, and multi-language template strategies.

Webhooks Setup

Implement real-time event handling with webhook endpoints, security validation, and retry logic.

Support & Resources

Need help? We've got you covered with comprehensive support resources and community channels.

Documentation

Getting Started Tutorial - Complete onboarding walkthrough
Support Center - FAQs, troubleshooting, and community resources
API Status - Real-time service status and incident reports

Get Help

Email Support: support@sent.dm