Sent v3 API

Build intelligent multi-channel messaging into your applications with the Sent v3 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 Quickstart Guide 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 a single required credential:

x-api-key: YOUR_API_KEY

Required Headers:

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.

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.

Idempotency

Ensure safe retries and prevent duplicate operations with idempotency keys for reliable API integrations.

Test Mode

Validate your integration without side effects — develop, debug, and deploy with confidence using test mode.

API Reference

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.

Glossary

Definitions of key terms, concepts, and terminology used throughout the Sent API documentation and platform.

Postman Collection

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

Support & Resources

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

Documentation

Quickstart Guide - 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