diff --git a/apps/bridge-worker/scripts/test-zammad-group-webhook.ts b/apps/bridge-worker/scripts/test-zammad-group-webhook.ts
new file mode 100755
index 0000000..9afa720
--- /dev/null
+++ b/apps/bridge-worker/scripts/test-zammad-group-webhook.ts
@@ -0,0 +1,62 @@
+#!/usr/bin/env tsx
+/**
+ * Test script to verify Zammad group webhook integration
+ * 
+ * This tests the group_created event webhook that is sent from bridge-worker
+ * to Zammad when a Signal group is created.
+ */
+
+// Using native fetch which is available in Node.js 18+
+
+const ZAMMAD_URL = process.env.ZAMMAD_URL || 'http://localhost:8001';
+const CHANNEL_TOKEN = process.env.CHANNEL_TOKEN || 'test-token';
+
+async function testGroupWebhook() {
+  console.log('Testing Zammad Signal group webhook...\n');
+
+  const webhookUrl = `${ZAMMAD_URL}/api/v1/channels_cdr_signal_webhook/${CHANNEL_TOKEN}`;
+  
+  const payload = {
+    event: 'group_created',
+    conversation_id: '12345', // This would be a real ticket number
+    original_recipient: '+1234567890',
+    group_id: 'a1b2c3d4-e5f6-7890-abcd-ef1234567890',
+    timestamp: new Date().toISOString()
+  };
+
+  console.log('Webhook URL:', webhookUrl);
+  console.log('Payload:', JSON.stringify(payload, null, 2));
+  console.log('\nSending request...\n');
+
+  try {
+    const response = await fetch(webhookUrl, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+      },
+      body: JSON.stringify(payload),
+    });
+
+    const responseText = await response.text();
+    console.log('Response Status:', response.status);
+    console.log('Response Headers:', [...response.headers.entries()]);
+    console.log('Response Body:', responseText);
+
+    if (response.ok) {
+      console.log('\n✅ Webhook test successful!');
+      try {
+        const data = JSON.parse(responseText);
+        console.log('Parsed response:', data);
+      } catch (e) {
+        // Response might not be JSON
+      }
+    } else {
+      console.log('\n❌ Webhook test failed!');
+    }
+  } catch (error) {
+    console.error('\n❌ Error testing webhook:', error);
+  }
+}
+
+// Run the test
+testGroupWebhook();
\ No newline at end of file
diff --git a/docker-compose.bridge-dev.yml b/docker-compose.bridge-dev.yml
new file mode 100644
index 0000000..33850b4
--- /dev/null
+++ b/docker-compose.bridge-dev.yml
@@ -0,0 +1,67 @@
+version: '3.8'
+
+services:
+  zammad-railsserver:
+    volumes:
+      # Controllers
+      - ${PWD}/packages/zammad-addon-bridge/src/app/controllers/channels_cdr_signal_controller.rb:/opt/zammad/app/controllers/channels_cdr_signal_controller.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/app/controllers/channels_cdr_voice_controller.rb:/opt/zammad/app/controllers/channels_cdr_voice_controller.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/app/controllers/channels_cdr_whatsapp_controller.rb:/opt/zammad/app/controllers/channels_cdr_whatsapp_controller.rb:ro
+      
+      # Models
+      - ${PWD}/packages/zammad-addon-bridge/src/app/models/channel/driver/cdr_signal.rb:/opt/zammad/app/models/channel/driver/cdr_signal.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/app/models/channel/driver/cdr_whatsapp.rb:/opt/zammad/app/models/channel/driver/cdr_whatsapp.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/app/models/ticket/article/enqueue_communicate_cdr_signal_job.rb:/opt/zammad/app/models/ticket/article/enqueue_communicate_cdr_signal_job.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/app/models/ticket/article/enqueue_communicate_cdr_whatsapp_job.rb:/opt/zammad/app/models/ticket/article/enqueue_communicate_cdr_whatsapp_job.rb:ro
+      
+      # Jobs
+      - ${PWD}/packages/zammad-addon-bridge/src/app/jobs/communicate_cdr_signal_job.rb:/opt/zammad/app/jobs/communicate_cdr_signal_job.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/app/jobs/communicate_cdr_whatsapp_job.rb:/opt/zammad/app/jobs/communicate_cdr_whatsapp_job.rb:ro
+      
+      # Policies
+      - ${PWD}/packages/zammad-addon-bridge/src/app/policies/controllers/channels_cdr_signal_controller_policy.rb:/opt/zammad/app/policies/controllers/channels_cdr_signal_controller_policy.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/app/policies/controllers/channels_cdr_voice_controller_policy.rb:/opt/zammad/app/policies/controllers/channels_cdr_voice_controller_policy.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/app/policies/controllers/channels_cdr_whatsapp_controller_policy.rb:/opt/zammad/app/policies/controllers/channels_cdr_whatsapp_controller_policy.rb:ro
+      
+      # Config - initializers
+      - ${PWD}/packages/zammad-addon-bridge/src/config/initializers/cdr_signal.rb:/opt/zammad/config/initializers/cdr_signal.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/config/initializers/cdr_whatsapp.rb:/opt/zammad/config/initializers/cdr_whatsapp.rb:ro
+      
+      # Config - routes
+      - ${PWD}/packages/zammad-addon-bridge/src/config/routes/channel_cdr_signal.rb:/opt/zammad/config/routes/channel_cdr_signal.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/config/routes/channel_cdr_voice.rb:/opt/zammad/config/routes/channel_cdr_voice.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/config/routes/channel_cdr_whatsapp.rb:/opt/zammad/config/routes/channel_cdr_whatsapp.rb:ro
+      
+      # Database migrations
+      - ${PWD}/packages/zammad-addon-bridge/src/db/addon/bridge/20210525091356_cdr_signal_channel.rb:/opt/zammad/db/addon/bridge/20210525091356_cdr_signal_channel.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/db/addon/bridge/20210525091357_cdr_voice_channel.rb:/opt/zammad/db/addon/bridge/20210525091357_cdr_voice_channel.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/db/addon/bridge/20210525091358_cdr_whatsapp_channel.rb:/opt/zammad/db/addon/bridge/20210525091358_cdr_whatsapp_channel.rb:ro
+      
+      # Lib files
+      - ${PWD}/packages/zammad-addon-bridge/src/lib/cdr_signal.rb:/opt/zammad/lib/cdr_signal.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/lib/cdr_signal_api.rb:/opt/zammad/lib/cdr_signal_api.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/lib/cdr_whatsapp.rb:/opt/zammad/lib/cdr_whatsapp.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/lib/cdr_whatsapp_api.rb:/opt/zammad/lib/cdr_whatsapp_api.rb:ro
+
+  # Also map to scheduler for background jobs
+  zammad-scheduler:
+    volumes:
+      # Models
+      - ${PWD}/packages/zammad-addon-bridge/src/app/models/channel/driver/cdr_signal.rb:/opt/zammad/app/models/channel/driver/cdr_signal.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/app/models/channel/driver/cdr_whatsapp.rb:/opt/zammad/app/models/channel/driver/cdr_whatsapp.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/app/models/ticket/article/enqueue_communicate_cdr_signal_job.rb:/opt/zammad/app/models/ticket/article/enqueue_communicate_cdr_signal_job.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/app/models/ticket/article/enqueue_communicate_cdr_whatsapp_job.rb:/opt/zammad/app/models/ticket/article/enqueue_communicate_cdr_whatsapp_job.rb:ro
+      
+      # Jobs
+      - ${PWD}/packages/zammad-addon-bridge/src/app/jobs/communicate_cdr_signal_job.rb:/opt/zammad/app/jobs/communicate_cdr_signal_job.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/app/jobs/communicate_cdr_whatsapp_job.rb:/opt/zammad/app/jobs/communicate_cdr_whatsapp_job.rb:ro
+      
+      # Config - initializers
+      - ${PWD}/packages/zammad-addon-bridge/src/config/initializers/cdr_signal.rb:/opt/zammad/config/initializers/cdr_signal.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/config/initializers/cdr_whatsapp.rb:/opt/zammad/config/initializers/cdr_whatsapp.rb:ro
+      
+      # Lib files
+      - ${PWD}/packages/zammad-addon-bridge/src/lib/cdr_signal.rb:/opt/zammad/lib/cdr_signal.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/lib/cdr_signal_api.rb:/opt/zammad/lib/cdr_signal_api.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/lib/cdr_whatsapp.rb:/opt/zammad/lib/cdr_whatsapp.rb:ro
+      - ${PWD}/packages/zammad-addon-bridge/src/lib/cdr_whatsapp_api.rb:/opt/zammad/lib/cdr_whatsapp_api.rb:ro
\ No newline at end of file
diff --git a/docker/compose/bridge.yml b/docker/compose/bridge.yml
index 83d948e..e76ae96 100644
--- a/docker/compose/bridge.yml
+++ b/docker/compose/bridge.yml
@@ -20,6 +20,7 @@ x-bridge-vars: &common-bridge-variables
   NEXTAUTH_URL: ${BRIDGE_DOMAIN}
   NEXTAUTH_SECRET: ${NEXTAUTH_SECRET}
   BRIDGE_SIGNAL_URL: ${BRIDGE_SIGNAL_URL}
+  BRIDGE_SIGNAL_AUTO_GROUPS: ${BRIDGE_SIGNAL_AUTO_GROUPS}
 
 services:
   bridge-frontend:
diff --git a/docker/scripts/docker.js b/docker/scripts/docker.js
index c9b8b0e..33d5da3 100644
--- a/docker/scripts/docker.js
+++ b/docker/scripts/docker.js
@@ -1,4 +1,5 @@
 const { spawn } = require("child_process");
+const path = require('path');
 
 const app = process.argv[2];
 const command = process.argv[3];
@@ -16,10 +17,19 @@ const files = {
   zammad: ["zammad", "postgresql", "opensearch"],
 };
 
+
+const envFile = path.resolve(process.cwd(), '.env');
 const finalFiles = files[app]
   .map((file) => ['-f', `docker/compose/${file}.yml`]).flat();
+
+// Add bridge-dev.yml for dev commands that include zammad
+const devAppsWithZammad = ['linkDev', 'bridgeDev', 'all'];
+if (devAppsWithZammad.includes(app) && files[app].includes('zammad')) {
+  finalFiles.push('-f', 'docker-compose.bridge-dev.yml');
+}
+
 const finalCommand = command === "up" ? ["up", "-d", "--remove-orphans"] : [command];
-const dockerCompose = spawn('docker', ['compose', '--env-file', '.env', ...finalFiles, ...finalCommand]);
+const dockerCompose = spawn('docker', ['compose', '--env-file', envFile, ...finalFiles, ...finalCommand]);
 
 dockerCompose.stdout.on('data', (data) => {
   console.info(`${data}`);
diff --git a/docker/zammad/install.rb b/docker/zammad/install.rb
index bd9ffa0..179b98d 100644
--- a/docker/zammad/install.rb
+++ b/docker/zammad/install.rb
@@ -1,5 +1,8 @@
 # frozen_string_literal: true
 
+require 'json'
+require 'base64'
+
 ROOT = '/opt/zammad'
 
 def _read_file(file, fullpath: false)
diff --git a/package.json b/package.json
index 0b08c54..33c7126 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,8 @@
     "docker:bridge:dev:down": "node docker/scripts/docker.js bridgeDev down",
     "docker:bridge:up": "node docker/scripts/docker.js bridge up",
     "docker:bridge:down": "node docker/scripts/docker.js bridge down",
-    "docker:bridge:build": "node docker/scripts/docker.js bridge build"
+    "docker:bridge:build": "node docker/scripts/docker.js bridge build",
+    "docker:zammad:restart": "docker restart zammad-railsserver zammad-scheduler"
   },
   "workspaces": [
     "apps/*",
diff --git a/packages/zammad-addon-bridge/src/app/assets/javascripts/app/controllers/_channel/cdr_signal.coffee b/packages/zammad-addon-bridge/src/app/assets/javascripts/app/controllers/_channel/cdr_signal.coffee
index a4deac2..f8f8028 100644
--- a/packages/zammad-addon-bridge/src/app/assets/javascripts/app/controllers/_channel/cdr_signal.coffee
+++ b/packages/zammad-addon-bridge/src/app/assets/javascripts/app/controllers/_channel/cdr_signal.coffee
@@ -1,4 +1,4 @@
-class Index extends App.ControllerSubContent
+class ChannelCdrSignal extends App.ControllerSubContent
   requiredPermission: 'admin.channel_cdr_signal'
   events:
     'click .js-new':     'new'
@@ -246,4 +246,4 @@ class FormEdit extends App.ControllerModal
         @el.find('.alert').removeClass('hidden').text(error_message)
     )
 
-App.Config.set('cdr_signal', { prio: 5100, name: 'Signal', parent: '#channels', target: '#channels/cdr_signal', controller: Index, permission: ['admin.channel_cdr_signal'] }, 'NavBarAdmin')
+App.Config.set('cdr_signal', { prio: 5100, name: 'Signal', parent: '#channels', target: '#channels/cdr_signal', controller: ChannelCdrSignal, permission: ['admin.channel_cdr_signal'] }, 'NavBarAdmin')
diff --git a/packages/zammad-addon-bridge/src/app/assets/javascripts/app/controllers/_channel/cdr_voice.coffee b/packages/zammad-addon-bridge/src/app/assets/javascripts/app/controllers/_channel/cdr_voice.coffee
index 72862ec..575aca2 100644
--- a/packages/zammad-addon-bridge/src/app/assets/javascripts/app/controllers/_channel/cdr_voice.coffee
+++ b/packages/zammad-addon-bridge/src/app/assets/javascripts/app/controllers/_channel/cdr_voice.coffee
@@ -1,4 +1,4 @@
-class Index extends App.ControllerSubContent
+class ChannelCdrVoice extends App.ControllerSubContent
   requiredPermission: 'admin.channel_cdr_voice'
   events:
     'click .js-new':     'new'
@@ -246,4 +246,4 @@ class FormEdit extends App.ControllerModal
         @el.find('.alert').removeClass('hidden').text(error_message)
     )
 
-App.Config.set('cdr_voice', { prio: 5100, name: 'Voice', parent: '#channels', target: '#channels/cdr_voice', controller: Index, permission: ['admin.channel_cdr_voice'] }, 'NavBarAdmin')
+App.Config.set('cdr_voice', { prio: 5100, name: 'Voice', parent: '#channels', target: '#channels/cdr_voice', controller: ChannelCdrVoice, permission: ['admin.channel_cdr_voice'] }, 'NavBarAdmin')
diff --git a/packages/zammad-addon-bridge/src/app/assets/javascripts/app/controllers/_channel/cdr_whatsapp.coffee b/packages/zammad-addon-bridge/src/app/assets/javascripts/app/controllers/_channel/cdr_whatsapp.coffee
index 5689e67..6876092 100644
--- a/packages/zammad-addon-bridge/src/app/assets/javascripts/app/controllers/_channel/cdr_whatsapp.coffee
+++ b/packages/zammad-addon-bridge/src/app/assets/javascripts/app/controllers/_channel/cdr_whatsapp.coffee
@@ -1,4 +1,4 @@
-class Index extends App.ControllerSubContent
+class ChannelCdrWhatsapp extends App.ControllerSubContent
   requiredPermission: 'admin.channel_cdr_whatsapp'
   events:
     'click .js-new':     'new'
@@ -246,4 +246,4 @@ class FormEdit extends App.ControllerModal
         @el.find('.alert').removeClass('hidden').text(error_message)
     )
 
-App.Config.set('cdr_whatsapp', { prio: 5100, name: 'Whatsapp', parent: '#channels', target: '#channels/cdr_whatsapp', controller: Index, permission: ['admin.channel_cdr_whatsapp'] }, 'NavBarAdmin')
+App.Config.set('cdr_whatsapp', { prio: 5100, name: 'Whatsapp', parent: '#channels', target: '#channels/cdr_whatsapp', controller: ChannelCdrWhatsapp, permission: ['admin.channel_cdr_whatsapp'] }, 'NavBarAdmin')
diff --git a/packages/zammad-addon-bridge/src/app/controllers/channels_cdr_signal_controller.rb b/packages/zammad-addon-bridge/src/app/controllers/channels_cdr_signal_controller.rb
index 3eb7c94..3bd34af 100644
--- a/packages/zammad-addon-bridge/src/app/controllers/channels_cdr_signal_controller.rb
+++ b/packages/zammad-addon-bridge/src/app/controllers/channels_cdr_signal_controller.rb
@@ -117,6 +117,11 @@ class ChannelsCdrSignalController < ApplicationController
     return render json: {}, status: 401 if !channel || !channel.active
     return render json: {}, status: 401 if channel.options[:token] != token
 
+    # Handle group creation events
+    if params[:event] == 'group_created'
+      return update_group
+    end
+
     channel_id = channel.id
 
     # validate input
@@ -141,6 +146,17 @@ class ChannelsCdrSignalController < ApplicationController
 
     receiver_phone_number = params[:to].strip
     sender_phone_number = params[:from].strip
+
+    # Check if this is a group message using the isGroup flag from bridge-worker
+    # This flag is set when:
+    # 1. The original message came from a Signal group
+    # 2. Bridge-worker created a new group for the conversation
+    # Note: We can't rely on UUID format alone because users with privacy settings
+    # may have UUID identifiers instead of phone numbers
+    is_group_message = params[:isGroup] == true || params[:is_group] == true
+    # If it's a group message, the 'to' field contains the group ID
+    group_id = is_group_message ? params[:to] : nil
+
     customer = User.find_by(phone: sender_phone_number)
     customer ||= User.find_by(mobile: sender_phone_number)
     unless customer
@@ -192,13 +208,28 @@ class ChannelsCdrSignalController < ApplicationController
 
     # find ticket or create one
     state_ids = Ticket::State.where(name: %w[closed merged removed]).pluck(:id)
-    ticket = Ticket.where(customer_id: customer.id).where.not(state_id: state_ids).order(:updated_at).first
+
+    # For group messages, find ticket by group_id in preferences
+    if is_group_message
+      ticket = Ticket.joins("LEFT JOIN tickets AS t2 ON t2.preferences::jsonb -> 'cdr_signal' ->> 'group_id' = '#{group_id}'")
+                     .where(customer_id: customer.id)
+                     .where.not(state_id: state_ids)
+                     .where("tickets.preferences::jsonb -> 'cdr_signal' ->> 'group_id' = ?", group_id)
+                     .order(:updated_at)
+                     .first
+    else
+      ticket = Ticket.where(customer_id: customer.id).where.not(state_id: state_ids).order(:updated_at).first
+    end
+
     if ticket
       # check if title need to be updated
       ticket.title = title if ticket.title == '-'
       new_state = Ticket::State.find_by(default_create: true)
       ticket.state = Ticket::State.find_by(default_follow_up: true) if ticket.state_id != new_state.id
     else
+      # Set up chat_id based on whether this is a group message
+      chat_id = is_group_message ? group_id : sender_phone_number
+
       ticket = Ticket.new(
         group_id: channel.group_id,
         title: title,
@@ -207,10 +238,15 @@ class ChannelsCdrSignalController < ApplicationController
           channel_id: channel.id,
           cdr_signal: {
             bot_token: channel.options[:bot_token], # change to bot id
-            chat_id: sender_phone_number
+            chat_id: chat_id
           }
         }
       )
+
+      # Store group_id if this is a group message
+      if is_group_message
+        ticket.preferences[:cdr_signal][:group_id] = group_id
+      end
     end
 
     ticket.save!
@@ -265,4 +301,66 @@ class ChannelsCdrSignalController < ApplicationController
 
     render json: result, status: :ok
   end
+
+  # Webhook endpoint for receiving group creation notifications from bridge-worker
+  # This is called when a Signal group is created for a conversation
+  # Expected payload:
+  # {
+  #   "event": "group_created",
+  #   "conversation_id": "ticket_id_or_number",
+  #   "original_recipient": "+1234567890",
+  #   "group_id": "uuid-of-signal-group",
+  #   "timestamp": "ISO8601 timestamp"
+  # }
+  def update_group
+    # Validate required parameters
+    errors = {}
+    errors['event'] = 'required' unless params[:event].present?
+    errors['conversation_id'] = 'required' unless params[:conversation_id].present?
+    errors['group_id'] = 'required' unless params[:group_id].present?
+
+    if errors.present?
+      render json: {
+        errors: errors
+      }, status: :bad_request
+      return
+    end
+
+    # Only handle group_created events for now
+    unless params[:event] == 'group_created'
+      render json: { error: 'Unsupported event type' }, status: :bad_request
+      return
+    end
+
+    # Find the ticket by ID or number
+    ticket = if params[:conversation_id].to_s.match?(/^\d+$/)
+               Ticket.find_by(id: params[:conversation_id])
+             else
+               Ticket.find_by(number: params[:conversation_id])
+             end
+
+    unless ticket
+      Rails.logger.error "Signal group update: Ticket not found for conversation_id #{params[:conversation_id]}"
+      render json: { error: 'Ticket not found' }, status: :not_found
+      return
+    end
+
+    # Update ticket preferences with the group information
+    ticket.preferences ||= {}
+    ticket.preferences[:cdr_signal] ||= {}
+    ticket.preferences[:cdr_signal][:group_id] = params[:group_id]
+    ticket.preferences[:cdr_signal][:chat_id] = params[:group_id]
+    ticket.preferences[:cdr_signal][:original_recipient] = params[:original_recipient] if params[:original_recipient].present?
+    ticket.preferences[:cdr_signal][:group_created_at] = params[:timestamp] if params[:timestamp].present?
+
+    ticket.save!
+
+    Rails.logger.info "Signal group #{params[:group_id]} associated with ticket #{ticket.id}"
+
+    render json: {
+      success: true,
+      ticket_id: ticket.id,
+      ticket_number: ticket.number
+    }, status: :ok
+  end
 end
diff --git a/packages/zammad-addon-bridge/src/app/jobs/communicate_cdr_signal_job.rb b/packages/zammad-addon-bridge/src/app/jobs/communicate_cdr_signal_job.rb
index 4452c52..b2dbc78 100644
--- a/packages/zammad-addon-bridge/src/app/jobs/communicate_cdr_signal_job.rb
+++ b/packages/zammad-addon-bridge/src/app/jobs/communicate_cdr_signal_job.rb
@@ -43,10 +43,7 @@ class CommunicateCdrSignalJob < ApplicationJob
     has_error = false
 
     begin
-      result = channel.deliver(
-        to: ticket.preferences[:cdr_signal][:chat_id],
-        body: article.body
-      )
+      result = channel.deliver(article)
     rescue StandardError => e
       log_error(article, e.message)
       has_error = true
diff --git a/packages/zammad-addon-bridge/src/app/jobs/communicate_cdr_whatsapp_job.rb b/packages/zammad-addon-bridge/src/app/jobs/communicate_cdr_whatsapp_job.rb
index 33b03e1..70e60b7 100644
--- a/packages/zammad-addon-bridge/src/app/jobs/communicate_cdr_whatsapp_job.rb
+++ b/packages/zammad-addon-bridge/src/app/jobs/communicate_cdr_whatsapp_job.rb
@@ -43,10 +43,7 @@ class CommunicateCdrWhatsappJob < ApplicationJob
     has_error = false
 
     begin
-      result = channel.deliver(
-        to: ticket.preferences[:cdr_whatsapp][:chat_id],
-        body: article.body
-      )
+      result = channel.deliver(article)
     rescue StandardError => e
       log_error(article, e.message)
       has_error = true
diff --git a/packages/zammad-addon-bridge/src/lib/cdr_signal.rb b/packages/zammad-addon-bridge/src/lib/cdr_signal.rb
index 4efc972..5c910a3 100644
--- a/packages/zammad-addon-bridge/src/lib/cdr_signal.rb
+++ b/packages/zammad-addon-bridge/src/lib/cdr_signal.rb
@@ -312,8 +312,21 @@ class CdrSignal
   def from_article(article)
     # sends a message from a zammad article
 
-    Rails.logger.debug { "Create signal message from article to '#{article[:to]}'..." }
+    Rails.logger.debug { "Create signal message from article..." }
 
-    @api.send_message(article[:to], article[:body])
+    # Get the recipient from ticket preferences
+    ticket = Ticket.find_by(id: article.ticket_id)
+    raise "No ticket found for article #{article.id}" unless ticket
+    
+    recipient = ticket.preferences.dig('cdr_signal', 'chat_id')
+    raise "No Signal chat_id found in ticket preferences" unless recipient
+
+    Rails.logger.debug { "Sending to recipient: '#{recipient}'" }
+
+    # Include ticket ID as conversationId for group creation callback
+    options = {}
+    options[:conversationId] = ticket.number if ticket
+
+    @api.send_message(recipient, article[:body], options)
   end
 end
diff --git a/packages/zammad-addon-bridge/src/lib/cdr_signal_api.rb b/packages/zammad-addon-bridge/src/lib/cdr_signal_api.rb
index 608466b..02ac423 100644
--- a/packages/zammad-addon-bridge/src/lib/cdr_signal_api.rb
+++ b/packages/zammad-addon-bridge/src/lib/cdr_signal_api.rb
@@ -35,6 +35,12 @@ class CdrSignalApi
   end
 
   def send_message(recipient, text, options = {})
-    post('send', { to: recipient.to_s, message: text }.merge(parse_hash(options)))
+    # Don't encode conversationId with CGI
+    params = { to: recipient.to_s, message: text }
+    if options[:conversationId]
+      params[:conversationId] = options[:conversationId]
+      options.delete(:conversationId)
+    end
+    post('send', params.merge(parse_hash(options)))
   end
 end
diff --git a/packages/zammad-addon-bridge/src/lib/cdr_whatsapp.rb b/packages/zammad-addon-bridge/src/lib/cdr_whatsapp.rb
index 62725ec..e20303a 100644
--- a/packages/zammad-addon-bridge/src/lib/cdr_whatsapp.rb
+++ b/packages/zammad-addon-bridge/src/lib/cdr_whatsapp.rb
@@ -312,8 +312,17 @@ class CdrWhatsapp
   def from_article(article)
     # sends a message from a zammad article
 
-    Rails.logger.debug { "Create whatsapp message from article to '#{article[:to]}'..." }
+    Rails.logger.debug { "Create whatsapp message from article..." }
 
-    @api.send_message(article[:to], article[:body])
+    # Get the recipient from ticket preferences
+    ticket = Ticket.find_by(id: article.ticket_id)
+    raise "No ticket found for article #{article.id}" unless ticket
+    
+    recipient = ticket.preferences.dig('cdr_whatsapp', 'chat_id')
+    raise "No WhatsApp chat_id found in ticket preferences" unless recipient
+
+    Rails.logger.debug { "Sending to recipient: '#{recipient}'" }
+
+    @api.send_message(recipient, article[:body])
   end
 end