diff --git a/source/packages/plg_system_mokosuitesupport/src/Helper/ConversationHelper.php b/source/packages/plg_system_mokosuitesupport/src/Helper/ConversationHelper.php
new file mode 100644
index 0000000..9c2ce6e
--- /dev/null
+++ b/source/packages/plg_system_mokosuitesupport/src/Helper/ConversationHelper.php
@@ -0,0 +1,149 @@
+<?php
+namespace Moko\Plugin\System\MokoSuiteSupport\Helper;
+
+defined('_JEXEC') or die;
+
+use Joomla\CMS\Factory;
+use Joomla\Database\DatabaseInterface;
+
+/**
+ * Conversation management — create, message, assign, close conversations across all channels.
+ */
+class ConversationHelper
+{
+	/**
+	 * Create a new conversation.
+	 */
+	public static function create(string $channel, ?int $contactId = null, ?string $visitorName = null): object
+	{
+		$allowedChannels = ['website', 'facebook', 'instagram', 'whatsapp', 'email'];
+		if (!in_array($channel, $allowedChannels, true)) {
+			$channel = 'website';
+		}
+
+		$db = Factory::getContainer()->get(DatabaseInterface::class);
+
+		$conversation = (object) [
+			'channel'      => $channel,
+			'contact_id'   => $contactId,
+			'visitor_name' => $visitorName,
+			'status'       => 'open',
+			'started_at'   => Factory::getDate()->toSql(),
+		];
+
+		$db->insertObject('#__mokosuitesupport_conversations', $conversation, 'id');
+
+		return (object) ['success' => true, 'conversation_id' => (int) $conversation->id];
+	}
+
+	/**
+	 * Send a message in a conversation.
+	 */
+	public static function sendMessage(int $conversationId, string $body, string $senderType = 'visitor', ?int $senderId = null): object
+	{
+		$allowedSenders = ['visitor', 'agent', 'system'];
+		if (!in_array($senderType, $allowedSenders, true)) {
+			$senderType = 'visitor';
+		}
+
+		$db = Factory::getContainer()->get(DatabaseInterface::class);
+		$filter = \Joomla\Filter\InputFilter::getInstance();
+
+		$message = (object) [
+			'conversation_id' => $conversationId,
+			'sender_type'     => $senderType,
+			'sender_id'       => $senderId,
+			'body'            => $filter->clean($body, 'STRING'),
+			'sent_at'         => Factory::getDate()->toSql(),
+		];
+
+		$db->insertObject('#__mokosuitesupport_messages', $message, 'id');
+
+		// Update conversation last_message_at
+		$db->setQuery($db->getQuery(true)
+			->update('#__mokosuitesupport_conversations')
+			->set('last_message_at = ' . $db->quote(Factory::getDate()->toSql()))
+			->where('id = ' . (int) $conversationId));
+		$db->execute();
+
+		return (object) ['success' => true, 'message_id' => (int) $message->id];
+	}
+
+	/**
+	 * Get unified inbox — all open conversations across channels.
+	 */
+	public static function getInbox(array $filters = [], int $limit = 50): array
+	{
+		$db = Factory::getContainer()->get(DatabaseInterface::class);
+
+		$query = $db->getQuery(true)
+			->select('c.id, c.channel, c.status, c.visitor_name, c.started_at, c.last_message_at')
+			->select('cd.name AS contact_name, cd.email_to')
+			->select('ag.display_name AS agent_name')
+			->select('(SELECT COUNT(*) FROM #__mokosuitesupport_messages m WHERE m.conversation_id = c.id) AS message_count')
+			->select('(SELECT body FROM #__mokosuitesupport_messages m2 WHERE m2.conversation_id = c.id ORDER BY m2.sent_at DESC LIMIT 1) AS last_message')
+			->from($db->quoteName('#__mokosuitesupport_conversations', 'c'))
+			->join('LEFT', $db->quoteName('#__contact_details', 'cd') . ' ON cd.id = c.contact_id')
+			->join('LEFT', $db->quoteName('#__mokosuitesupport_agents', 'ag') . ' ON ag.id = c.agent_id')
+			->order('c.last_message_at DESC');
+
+		if (!empty($filters['status'])) {
+			$query->where($db->quoteName('c.status') . ' = ' . $db->quote($filters['status']));
+		} else {
+			$query->where($db->quoteName('c.status') . ' IN (' . $db->quote('open') . ',' . $db->quote('assigned') . ')');
+		}
+
+		if (!empty($filters['channel'])) {
+			$query->where($db->quoteName('c.channel') . ' = ' . $db->quote($filters['channel']));
+		}
+
+		if (!empty($filters['agent_id'])) {
+			$query->where('c.agent_id = ' . (int) $filters['agent_id']);
+		}
+
+		$db->setQuery($query, 0, min(max(1, $limit), 200));
+
+		return $db->loadObjectList() ?: [];
+	}
+
+	/**
+	 * Assign a conversation to an agent.
+	 */
+	public static function assign(int $conversationId, int $agentId): bool
+	{
+		$db = Factory::getContainer()->get(DatabaseInterface::class);
+
+		$db->setQuery($db->getQuery(true)
+			->update('#__mokosuitesupport_conversations')
+			->set('agent_id = ' . (int) $agentId)
+			->set($db->quoteName('status') . ' = ' . $db->quote('assigned'))
+			->set('assigned_at = ' . $db->quote(Factory::getDate()->toSql()))
+			->where('id = ' . (int) $conversationId));
+		$db->execute();
+
+		return $db->getAffectedRows() > 0;
+	}
+
+	/**
+	 * Close a conversation with optional CSAT rating.
+	 */
+	public static function close(int $conversationId, ?int $csatRating = null): bool
+	{
+		$db = Factory::getContainer()->get(DatabaseInterface::class);
+
+		$query = $db->getQuery(true)
+			->update('#__mokosuitesupport_conversations')
+			->set($db->quoteName('status') . ' = ' . $db->quote('closed'))
+			->set('ended_at = ' . $db->quote(Factory::getDate()->toSql()))
+			->where('id = ' . (int) $conversationId);
+
+		if ($csatRating !== null && $csatRating >= 1 && $csatRating <= 5) {
+			$query->set('csat_rating = ' . (int) $csatRating);
+		}
+
+		$db->setQuery($query);
+		$db->execute();
+
+		return $db->getAffectedRows() > 0;
+	}
+}
diff --git a/source/pkg_mokosuitesupport.xml b/source/pkg_mokosuitesupport.xml
new file mode 100644
index 0000000..2d69870
--- /dev/null
+++ b/source/pkg_mokosuitesupport.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<extension type="package" method="upgrade">
+	<name>Package - MokoSuite Support</name>
+	<packagename>mokosuitesupport</packagename>
+	<version>01.00.00</version>
+	<creationDate>2026-06-21</creationDate>
+	<author>Moko Consulting</author>
+	<authorEmail>hello@mokoconsulting.tech</authorEmail>
+	<authorUrl>https://mokoconsulting.tech</authorUrl>
+	<copyright>Copyright (C) 2026 Moko Consulting. All rights reserved.</copyright>
+	<license>GNU General Public License version 3 or later; see LICENSE</license>
+	<description>MokoSuite Support - live chat, multi-channel customer support (website, Facebook, Instagram, WhatsApp, email). Interfaces with CRM contacts and ticket system.</description>
+	<php_minimum>8.3</php_minimum>
+	<dlid prefix="dlid=" suffix=""/>
+	<blockChildUninstall>true</blockChildUninstall>
+	<scriptfile>script.php</scriptfile>
+
+	<files folder="packages">
+		<file type="plugin" id="plg_system_mokosuitesupport" group="system">plg_system_mokosuitesupport.zip</file>
+		<file type="component" id="com_mokosuitesupport">com_mokosuitesupport.zip</file>
+	</files>
+
+	<updateservers>
+		<server type="extension" priority="1" name="Package - MokoSuite Support">https://git.mokoconsulting.tech/MokoConsulting/MokoSuiteSupport/updates.xml</server>
+	</updateservers>
+</extension>