---
title: "Messages"
description: "Send template, free-form, and interactive messages over the WhatsApp\nBusiness API, and check delivery status.\n\n**Free-form and interactive messages are only delivered inside an active\nchat window**: the contact must have messaged your WhatsApp API number in\nthe last 24 hours. Call [Get chat active window status](/api/chat/active)\nfirst to avoid re-engagement errors. Template messages have no such limit.\n"
---

> Documentation Index
> Fetch the complete documentation index at: https://zacx.io/llms.txt
> Use this file to discover all available pages before exploring further.

Path: Zacx Public API

Send template, free-form, and interactive messages over the WhatsApp
Business API, and check delivery status.

**Free-form and interactive messages are only delivered inside an active
chat window**: the contact must have messaged your WhatsApp API number in
the last 24 hours. Call [Get chat active window status](/api/chat/active)
first to avoid re-engagement errors. Template messages have no such limit.

## Operations

- [Send a message](/api/message/send)
- [Get message status](/api/message/status)


Source: https://zacx.io/api/tags/Messages/index.md