How to Get WhatsApp channel JID (Channel ID) Using Webhook and WaSenderAPI

If you're working with WhatsApp automation and need to send messages programmatically, knowing how to retrieve a WhatsApp channel JID (Jabber ID) or Channel ID is essential. In this tutorial, you’ll learn how to capture the channel JID using a webhook listener, test it using tools like Webhook.site, and send messages using the WaSenderAPI.

This guide is especially useful if you're working with WhatsApp channels or automating WhatsApp customer support or notifications.

🔍 What is a WhatsApp JID?

A JID (Jabber ID) is a unique identifier used by WhatsApp to represent users, groups, or channels. When sending messages via an API, you need this identifier in the to field to specify the message recipient.

Examples of WhatsApp JIDs:

• For users: [email protected]
• For groups: [email protected]
• For channels: 123456789@newsletter

⚙️ Step 1: Set Up Your Webhook to Receive Messages

To get a JID, you first need to listen for incoming messages via webhook. When someone sends a message to your WhatsApp account or channel, a webhook will be triggered with payload data that includes the remoteJid (the JID you need).

✅ Create a Webhook URL

You can use Webhook.site to test this easily:

1. Go to https://webhook.site.
2. Copy the unique URL that is generated for you.
3. Paste that URL into your WaSenderAPI Webhook settings (this is where incoming messages will be sent).

📩 Step 2: Wait for the messages.upsert Event

When a new message is received on your WhatsApp account or channel, WaSenderAPI will trigger a messages.upsert event and send data to your webhook.

Here is what a typical payload looks like:

{
  "event": "messages.upsert",
  "timestamp": 1633456789,
  "data": {
    "key": {
      "id": "message-id-123",
      "fromMe": false,
      "remoteJid": "123456789@newsletter"
    },
    "message": {
      "conversation": "Hello! How can I help you?"
    }
  }
}
    

📲 Step 3: Extract the remoteJid

In the above payload, you can extract the remoteJid field to retrieve the JID of the sender. In this case, it’s 123456789@newsletter.

This JID can now be used as the recipient when sending messages using the WaSenderAPI.

📤 Step 4: Send a Message Using WaSenderAPI

Once you have the JID, you can send messages to that user or channel by passing the JID as the to field in your message API call. Here’s an example using WaSenderAPI:

{
  "to": "123456789@newsletter",
  "text": "Hello, your order has been processed!"
}
    

✅ Conclusion

With this approach, you can easily extract the WhatsApp channel JID (Channel ID) from the webhook event and use it to send messages. This is essential for automating communication with users and managing your WhatsApp channels efficiently.