Build with Telzyn.
A clean REST API. Webhooks. SDKs. Sandbox. Everything you need to go from idea to production.
Up and running in 5 minutes.
Authenticate with your API key. Send your first SMS. Receive delivery receipts via webhook. That's the entire integration for most use cases.
// Send an SMS with Telzyn
const response = await fetch('https://api.telzyn.co/v1/messages', {
method: 'POST',
headers: {
'Authorization': 'Bearer YOUR_API_KEY',
'Content-Type': 'application/json'
},
body: JSON.stringify({
to: '+16715551234',
from: '+16715550000',
body: 'Your appointment is confirmed for tomorrow at 9am.'
})
});
const message = await response.json();
console.log(message.sid); // msg_01abc...API Features
RESTful API with JSON responses
Webhook delivery for inbound messages and status updates
Detailed delivery receipts
Real-time message logs in dashboard
Sandbox environment for testing
API key authentication
Rate limiting with clear error messages
Idempotency keys for safe retries
Official SDKs
Node.js / TypeScript
Python
PHP
REST (any language)
Developer Support
We're local. When you have a question about routing to a 671 number or need help with a healthcare compliance question, you're talking to someone who understands the Pacific territory context.
Email: [email protected]