How to use WhatsApp Group Participant Left Webhook

Track Every Voluntary Group Exit in Real Time and Respond Before It Becomes a Larger Problem

A customer quietly leaves your WhatsApp group. No message, no explanation, no warning. They were in the group yesterday and today they are not.

In most businesses, this exit goes unnoticed for days — or forever. No one is watching the group member count closely enough to notice one person is gone. By the time someone realises, the customer may have already churned, switched to a competitor, or developed a frustration that could have been addressed if someone had reached out sooner.

The WhatsApp Group Participant Left Webhook ensures this never happens silently again. The moment any participant voluntarily leaves a WhatsApp group on DoubleTick, this webhook fires and sends their details to your connected system — instantly, so your team can assess the situation and decide whether to act.

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What Is the WhatsApp Group Participant Left Webhook?

In DoubleTick, participants can exit a WhatsApp group at any time of their own volition. The WhatsApp Group Participant Left webhook fires specifically when this happens — when a participant leaves a group on their own, as opposed to being removed by the business or an admin.

This distinction is important. A participant leaving voluntarily is a behavioural signal — it means they made a conscious choice to exit. That choice carries information your business can use.

Think of it like a loyalty card being handed back at the counter. It is a small, quiet action — but it tells you something specific about how that customer feels about their relationship with your business.

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When Does This Webhook Trigger?

This webhook activates when:

• A participant voluntarily exits a WhatsApp group on DoubleTick on their own

It does not fire when a participant is removed by the business or an admin — that is covered by the Group Participant Removed webhook.

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Step-by-Step Setup Guide

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Step 1: Open Webhooks in DoubleTick

1. Log in to your DoubleTick account

2. Go to Settings

3. Click on Webhooks

Step 2: Create a New Webhook

1. Click New Webhook

2. Give it a clear name — for example: Group Exit Tracker

Step 3: Get Your Webhook URL

You need a destination URL — this is where DoubleTick will send the exit data the moment a participant leaves.

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

Step 4: Fill in Webhook Details

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

Step 5: Choose the Event

1. Select WhatsApp Group Participant Left from the event list

2. Click Create Webhook

Your webhook is now live and tracking every voluntary group exit the moment it happens.

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How to Test It

1. Add a test number to any WhatsApp group through DoubleTick

2. From that test number, voluntarily leave the group

3. Go to Bot Studio → Capture Response → View Response Data

You will see all the data captured at the exact moment the participant left.

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What Data Do You Receive?

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 left
Group Name	The name of the WhatsApp group
Customer Phone	The phone number of the participant who left
Participant Left At	The exact date and time the participant exited the group

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Sample payload

{
    "groupId": "support_group_001",
    "groupName": "New Support – Jan 2026",
    "customerPhone": "919999999999",
    "participantLeftAt": "2026-02-11T10:02:45.430Z"
}

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Summary

The WhatsApp Group Participant Left Webhook transforms a silent, invisible action — a member quietly leaving a group — into a real-time signal your business can act on. For any business where group membership is tied to customer engagement, loyalty, or retention, this webhook gives you the earliest possible warning that someone is pulling away. The earlier you know, the earlier you can respond — and early responses are almost always the most effective ones.

Set it up once, and every group exit becomes an opportunity to have the right conversation at the right time.