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

# WhatsApp Chat

> This page describes how to use WhatsApp chat with QCall AI via Zeplo

## WhatsApp Chat

QCall AI integrates with WhatsApp through **Zeplo**, enabling you to send WhatsApp messages using approved templates. This is perfect for sending booking confirmations, reminders, follow-ups, and notifications.

## Prerequisites

Before using WhatsApp chat, make sure you have:

1. A Zeplo account configured (see [Zeplo Setup](/general/integrations/zeploSetup))
2. Approved WhatsApp message templates in Zeplo (see [Zeplo Templates](/general/integrations/zeploTemplates))
3. A WhatsApp Business API account connected to Zeplo

## How to Send WhatsApp Messages

### During a Call (Action-Based)

You can configure your assistant to send WhatsApp messages during or after a call using the **sendMessage** action with Zeplo configuration.

Follow these steps:

1. Go to **Assistant Settings** under Call Platforms
2. In the **Actions** section, add a new action of type `sendMessage`
3. Configure the Zeplo settings:
   * **is\_zeplo**: Enable Zeplo WhatsApp messaging
   * **description**: Condition text describing when to send the message
   * **content**: Zeplo template configuration:
     * **templateName**: Name of the approved WhatsApp template
     * **language**: Template language code (e.g., `en_US`)
     * **category**: Template category (`MARKETING`, `UTILITY`, or `AUTHENTICATION`)
     * **parameter\_hints**: Array of hint strings for AI to extract values for placeholders
     * **parameter\_slots**: Array of slot objects describing placeholder positions
   * **end\_call\_sms**: Send message after the call ends
   * **end\_call\_sms\_not\_answered**: Send if call is not answered

### Example Configuration

```json theme={null}
{
  "type": "sendMessage",
  "zeplo": {
    "is_zeplo": true,
    "description": "Send booking confirmation via WhatsApp after meeting is scheduled",
    "content": {
      "templateName": "booking_confirmation",
      "language": "en_US",
      "category": "UTILITY",
      "parameter_hints": ["customer name", "appointment date", "appointment time"],
      "parameter_slots": [
        { "section": "body", "index": 1, "label": "Body {{1}}" },
        { "section": "body", "index": 2, "label": "Body {{2}}" },
        { "section": "body", "index": 3, "label": "Body {{3}}" }
      ],
      "components": []
    },
    "end_call_sms": true
  }
}
```

## WhatsApp Template Guidelines

* Templates must be pre-approved by WhatsApp before use
* Each template has a specific category (Marketing, Utility, Authentication)
* Templates support dynamic parameters using numbered placeholders (e.g., `{{1}}`, `{{2}}`)
* Messages outside the 24-hour session window must use approved templates

## Best Practices

* Get your templates approved well in advance
* Use clear and relevant template names
* Test templates with sample data before launching campaigns
* Keep parameter hints descriptive for accurate AI extraction