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

# Connect Communication Channels

> Connect WhatsApp Business, Gmail, or Outlook to Cendra to receive and respond to guest messages from a single unified inbox.

Cendra supports multiple communication channels for guest messaging: WhatsApp Business, Gmail, Outlook, and booking platforms like Airbnb and Booking.com (via your PMS inbox). Connect at least one channel to start receiving guest messages in your unified inbox.

<Info>**Quick links:** Connect WhatsApp — [https://app.cendra.ai/settings/whatsapp-connection](https://app.cendra.ai/settings/whatsapp-connection) | Connect Email — [https://app.cendra.ai/settings/workspace](https://app.cendra.ai/settings/workspace)</Info>

## Available Channels

| Channel               | How to connect                                     | Best for                                |
| --------------------- | -------------------------------------------------- | --------------------------------------- |
| **WhatsApp Business** | WhatsApp Business API setup in Settings → WhatsApp | International guests, instant messaging |
| **Gmail**             | Google OAuth in Settings → Email                   | Email-based guest communication         |
| **Outlook**           | Microsoft OAuth in Settings → Email                | Microsoft 365 / business email users    |

## Connecting WhatsApp Business

1. Navigate to **Settings → WhatsApp Connection**
2. Follow the 3-step setup wizard:
   * Select your WhatsApp Business account
   * Configure message templates
   * Complete the integration
3. Once connected, guest WhatsApp messages appear in your unified inbox

[Full WhatsApp setup guide →](/inbox/whatsapp-business)

## Connecting Email (Gmail or Outlook)

1. Navigate to **Settings → Email**
2. Click **Add Email Account**
3. Choose **Gmail** or **Outlook**
4. Authenticate via OAuth (Google or Microsoft login)
5. Cendra starts syncing incoming guest emails immediately

You can also connect email via IMAP for custom email servers.

## All Channels in One Inbox

Once connected, all guest messages — regardless of channel — appear in Cendra's [unified inbox](/inbox/unified-inbox). You see WhatsApp messages, Gmail emails, and Outlook emails in a single view, with AI suggestions for each.

<Card title="Next: Test in Sandbox" icon="arrow-right" href="/getting-started/test-in-sandbox">
  Test your AI agent before deploying it to live guest conversations.
</Card>