# How to use WhatsApp Group Participant Joined Webhook

You create a WhatsApp group for a product launch, an onboarding cohort, or a customer community. People start joining. But your CRM has no idea who has joined. Your onboarding system does not know to send a welcome sequence. Your dashboard still shows zero members because no one has manually updated it.

The **WhatsApp Group Participant Joined Webhook** eliminates this gap. The moment any participant joins a WhatsApp group created through DoubleTick — whether they were added by the business, accepted an invite, or were auto-approved — this webhook fires and sends their details to your connected system instantly.

***

#### <mark style="color:$primary;">**What Is the WhatsApp Group Participant Joined Webhook?**</mark>

In DoubleTick, participants can join a WhatsApp group in multiple ways — they can be directly added by the business, they can use an invite link, or they can be auto-approved through a join request. Regardless of how they joined, the **WhatsApp Group Participant Joined** webhook fires the moment their membership is confirmed and they become an active member of the group.

Think of it like a check-in scanner at a venue entrance. The moment someone walks through the door — however they got there — the scanner registers their arrival, timestamps it, and sends the record to the system.

***

#### <mark style="color:$primary;">**When Does This Webhook Trigger?**</mark>

This webhook activates when:

* A participant is added to a WhatsApp group by the business through DoubleTick
* A participant joins a group by accepting an invite link
* A participant is auto-approved and joins the group

***

### <mark style="color:$primary;">**Step-by-Step Setup Guide**</mark>

***

#### <mark style="color:$primary;">**Step 1: Open Webhooks in DoubleTick**</mark>

1. Log in to your DoubleTick account
2. Go to **Settings**
3. Click on **Webhooks**

#### <mark style="color:$primary;">**Step 2: Create a New Webhook**</mark>

1. Click **New Webhook**
2. Give it a clear name — for example: `Group Participant Joined Tracker`

#### <mark style="color:$primary;">**Step 3: Get Your Webhook URL**</mark>

You need a destination URL — this is where DoubleTick will send the participant data the moment someone joins a group.

You can connect it to:

* A **CRM** like Zoho, HubSpot, or Salesforce
* An **automation tool** like Zapier or Pabbly
* A **spreadsheet** like Google Sheets
* Your own **backend or internal dashboard**

**For testing purposes**, you can use DoubleTick's **Bot Studio** to capture and preview the data first:

1. Open a new tab and go to **Bot Studio**
2. Click **Create New Bot**
3. Set the trigger to **On Webhook**
4. **Copy the webhook URL** that appears

#### <mark style="color:$primary;">**Step 4: Fill in Webhook Details**</mark>

1. Go back to the **Webhooks** page
2. Paste the webhook URL
3. Select your **API Number** (your WABA/WhatsApp Business number)
4. Click **Continue**

#### <mark style="color:$primary;">**Step 5: Choose the Event**</mark>

1. Select **WhatsApp Group Participant Joined** from the event list
2. Click **Create Webhook**

Your webhook is now live and tracking every new group member the moment they join.

***

#### <mark style="color:$primary;">**How to Test It**</mark>

1. Add a participant to any existing WhatsApp group through DoubleTick, or have someone join via the invite link
2. Go to **Bot Studio → Capture Response → View Response Data**

You will see the participant's details captured at the exact moment they joined.

***

#### <mark style="color:$primary;">**What Data Do You Receive?**</mark>

When this webhook fires, it sends the following information to your system:

| Field                 | What It Tells You                                        |
| --------------------- | -------------------------------------------------------- |
| Group ID              | The custom ID of the group the participant joined        |
| Group Name            | The name of the WhatsApp group                           |
| Customer Phone        | The phone number of the participant who joined           |
| Participant Joined At | The exact date and time the participant joined the group |

***

#### <mark style="color:$primary;">**Sample payload**</mark>

```json
{
    "groupId": "support_group_001",
    "groupName": "New Support – Jan 2026",
    "customerPhone": "919999999999",
    "participantJoinedAt": "2026-02-10T08:25:10.000Z"
}
```

***

#### <mark style="color:$primary;">**Summary**</mark>

The WhatsApp Group Participant Joined Webhook turns a simple membership event into a powerful trigger for onboarding, compliance, and CRM workflows. The moment someone joins your group, your systems know — and can act immediately. For businesses that run regulated, structured, or high-volume group communication, this webhook ensures that every new member is captured, acknowledged, and processed correctly from the very first second.

Set it up once, and every group join becomes an automatic action — not a manual task someone might forget.