Documentation

Everything you need to integrate iMessage, RCS, and SMS into your app.

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Getting Started

Set up your account and send your first message.

Quick Start

Send your first iMessage or SMS in 3 steps.
Authentication

How to authenticate with the senderZ API using API keys.
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API Reference

Endpoints, authentication, and response formats.

Send a Message

POST /v1/messages — send iMessage or SMS to any phone number.
Templates

Create reusable message templates with dynamic variables.
Webhooks

Receive real-time delivery events and inbound messages.