Messenger Setup

Prerequisites

• A published Facebook Page for your business
• Meta Business Manager account with admin access to the Page
• Meta for Developers account

1Add Messenger as a product

1. Go to developers.facebook.com and open (or create) your Meta app
2. On the app dashboard, scroll to Add Products to Your App
3. Find Messenger and click Set Up

2Connect your Facebook Page

1. Under Access Tokens, click Add or Remove Pages
2. Select your business's Facebook Page and grant the requested permissions
3. Generate a Page Access Token — for production, generate this via a System User for a non-expiring token

3Connect the Page in Nexvox

1. In Nexvox, go to Settings → Channels → Messenger
2. Click Connect Page and log in with your Facebook Page admin account
3. Select the Page to connect

4Configure the webhook

1. In Meta, go to Messenger → Configuration → Webhook
2. Set the Callback URL to:

https://app.nexvox.co/api/webhook/messenger

3. Set the Verify Token — copy it from Nexvox → Settings → Channels → Messenger → Webhook Verify Token
4. Subscribe to the messages and messaging_postbacks fields
5. Click Verify and save

5Test the connection

Send a message to your connected Facebook Page. It should appear in the Nexvox inbox within a few seconds, alongside your WhatsApp conversations.

If you don't see it:

• –Verify your webhook subscription is active in Meta
• –Check that pages_messaging has been approved for your app
• –Confirm the Page Access Token hasn't expired — switch to a System User token for production