diff --git a/api/get_user_messages.php b/api/get_user_messages.php
index 43d8ecb..83f41b2 100644
--- a/api/get_user_messages.php
+++ b/api/get_user_messages.php
@@ -31,11 +31,15 @@ try {
             id,
             user_id,
             COALESCE(content, message_text) as content,
+            message_id,
+            c.media_url,
+            u.phone_number as user_phone,
             direction,
             message_type,
             status,
             created_at
-         FROM conversations 
+         FROM conversations c 
+         LEFT JOIN users u ON c.user_id = u.id
          WHERE user_id = :user_id
          UNION ALL
          SELECT 
@@ -76,6 +80,9 @@ try {
             'id' => intval($msg['id']),
             'user_id' => intval($msg['user_id']),
             'content' => $msg['content'] ?? '',
+            'message_id' => $msg['message_id'] ?? null,
+            'media_url' => $msg['media_url'] ?? null,
+            'user_phone' => $msg['user_phone'] ?? null,
             'direction' => $msg['direction'] ?? 'incoming',
             'message_type' => $msg['message_type'] ?? 'text',
             'status' => $msg['status'] ?? 'sent',
diff --git a/api/send_message.php b/api/send_message.php
index 5464b6d..c66b1c7 100644
--- a/api/send_message.php
+++ b/api/send_message.php
@@ -155,10 +155,16 @@ try {
                 error_log("=== DEBUG WHATSAPP TEXT MESSAGE ===");
                 error_log("Recipient: " . $recipient);
                 error_log("Message: " . $input['message']);
-                error_log("Method: sendTextMessage()");
+                error_log("Method: sendTextMessage()/sendTextReply()");
                 error_log("====================================");
-                
-                $response = $whatsappService->sendTextMessage($recipient, $input['message']);
+
+                // Si viene reply_to, usar reply con contexto
+                if (!empty($input['reply_to'])) {
+                    $replyTo = $input['reply_to'];
+                    $response = $whatsappService->sendTextReply($recipient, $replyTo, $input['message']);
+                } else {
+                    $response = $whatsappService->sendTextMessage($recipient, $input['message']);
+                }
                 break;
                 
             case 'template':
diff --git a/api/send_reaction.php b/api/send_reaction.php
new file mode 100644
index 0000000..8e6c51e
--- /dev/null
+++ b/api/send_reaction.php
@@ -0,0 +1,32 @@
+<?php
+require_once __DIR__ . '/../config/config_enhanced.php';
+require_once __DIR__ . '/../config/config.php';
+
+header('Content-Type: application/json; charset=utf-8');
+
+// Autenticación para APIs (debug skip)
+$debugMode = isset($_GET['debug']) && $_GET['debug'] === 'true';
+if (!$debugMode && function_exists('requireAuthentication')) {
+    requireAuthentication();
+}
+
+$input = json_decode(file_get_contents('php://input'), true) ?: $_POST;
+$to = $input['to'] ?? null;
+$message_id = $input['message_id'] ?? null;
+$emoji = $input['emoji'] ?? null;
+$dry = isset($input['dry_run']) ? (bool)$input['dry_run'] : false;
+
+if (!$to || !$message_id || !$emoji) {
+    http_response_code(400);
+    echo json_encode(['success' => false, 'error' => 'Parámetros faltantes: to, message_id, emoji']);
+    exit;
+}
+
+try {
+    $wa = new WhatsAppService();
+    $result = $wa->sendReaction($to, $message_id, $emoji, $dry);
+    echo json_encode(['success' => true, 'dry_run' => $dry, 'result' => $result]);
+} catch (Throwable $t) {
+    http_response_code(500);
+    echo json_encode(['success' => false, 'error' => $t->getMessage()]);
+}
diff --git a/api/send_reply.php b/api/send_reply.php
new file mode 100644
index 0000000..c614795
--- /dev/null
+++ b/api/send_reply.php
@@ -0,0 +1,33 @@
+<?php
+require_once __DIR__ . '/../config/config_enhanced.php';
+require_once __DIR__ . '/../config/config.php';
+
+header('Content-Type: application/json; charset=utf-8');
+
+// Autenticación para APIs (debug skip)
+$debugMode = isset($_GET['debug']) && $_GET['debug'] === 'true';
+if (!$debugMode && function_exists('requireAuthentication')) {
+    requireAuthentication();
+}
+
+$input = json_decode(file_get_contents('php://input'), true) ?: $_POST;
+$to = $input['to'] ?? null;
+$message_id = $input['message_id'] ?? null;
+$text = $input['text'] ?? null;
+$preview = isset($input['preview_url']) ? (bool)$input['preview_url'] : false;
+$dry = isset($input['dry_run']) ? (bool)$input['dry_run'] : false;
+
+if (!$to || !$message_id || !$text) {
+    http_response_code(400);
+    echo json_encode(['success' => false, 'error' => 'Parámetros faltantes: to, message_id, text']);
+    exit;
+}
+
+try {
+    $wa = new WhatsAppService();
+    $result = $wa->sendTextReply($to, $message_id, $text, $preview, $dry);
+    echo json_encode(['success' => true, 'dry_run' => $dry, 'result' => $result]);
+} catch (Throwable $t) {
+    http_response_code(500);
+    echo json_encode(['success' => false, 'error' => $t->getMessage()]);
+}
diff --git a/api/webhook.php b/api/webhook.php
index c639a6d..2108c8c 100644
--- a/api/webhook.php
+++ b/api/webhook.php
@@ -128,7 +128,13 @@ class WhatsAppWebhook {
             $messageType = 'text';
             $mediaUrl = null;
             
-            if (isset($message['text'])) {
+            if (isset($message['reaction'])) {
+                // Reacción (emoji) a un mensaje anterior
+                $messageType = 'reaction';
+                $emoji = $message['reaction']['emoji'] ?? '';
+                $reactionTo = $message['reaction']['message_id'] ?? '';
+                $messageText = json_encode(['emoji' => $emoji, 'message_id' => $reactionTo]);
+            } elseif (isset($message['text'])) {
                 $messageText = $message['text']['body'];
                 $messageType = 'text';
             } elseif (isset($message['image'])) {
diff --git a/assets/js/app.js b/assets/js/app.js
index 09c5114..40265e9 100644
--- a/assets/js/app.js
+++ b/assets/js/app.js
@@ -1028,6 +1028,38 @@ class WhatsAppBotManager {
         this.showTab('messages');
     }
 
+    replyToMessage(messageId, userPhone) {
+        // Poner en el input del chat y almacenar reply_to en data attribute
+        document.getElementById('message-input').focus();
+        document.getElementById('message-input').dataset.replyTo = messageId;
+        this.showSuccess('Preparado para responder al mensaje ' + messageId);
+    }
+
+    async reactToMessage(messageId, userPhone) {
+        const emoji = prompt('Escribe el emoji de reacción (ej: ❤️, 👍):');
+        if (!emoji) return;
+
+        try {
+            const resp = await fetch('api/send_reaction.php', {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                body: JSON.stringify({ to: userPhone, message_id: messageId, emoji: emoji })
+            });
+            const data = await resp.json();
+            if (data.success) {
+                this.showSuccess('Reacción enviada');
+                // Refrescar mensajes
+                await this.loadMessages(this.currentUserId, false);
+            } else {
+                this.showError('Error enviando reacción: ' + (data.error || 'desconocido'));
+            }
+        } catch (err) {
+            console.error('reactToMessage error', err);
+            this.showError('Error comunicándose con el servidor');
+        }
+    }
+
+
     editUser(userId) {
         // Implementar modal de edición de usuario
         console.log('Editar usuario:', userId);
diff --git a/config/config_enhanced.php b/config/config_enhanced.php
index a4b8812..c7f8e7f 100644
--- a/config/config_enhanced.php
+++ b/config/config_enhanced.php
@@ -44,50 +44,50 @@ function env($key, $default = null) {
 }
 
 // Configuración de la base de datos
-define('DB_HOST', env('DB_HOST', 'localhost'));
-define('DB_PORT', env('DB_PORT', '3306'));
-define('DB_NAME', env('DB_NAME', 'whatsapp_bot'));
-define('DB_USER', env('DB_USER', 'whatsapp_user'));
-define('DB_PASS', env('DB_PASS', '')); // Se generará automáticamente en la instalación
-define('DB_CHARSET', env('DB_CHARSET', 'utf8mb4'));
+if (!defined('DB_HOST')) define('DB_HOST', env('DB_HOST', 'localhost'));
+if (!defined('DB_PORT')) define('DB_PORT', env('DB_PORT', '3306'));
+if (!defined('DB_NAME')) define('DB_NAME', env('DB_NAME', 'whatsapp_bot'));
+if (!defined('DB_USER')) define('DB_USER', env('DB_USER', 'whatsapp_user'));
+if (!defined('DB_PASS')) define('DB_PASS', env('DB_PASS', '')); // Se generará automáticamente en la instalación
+if (!defined('DB_CHARSET')) define('DB_CHARSET', env('DB_CHARSET', 'utf8mb4'));
 
 // WhatsApp Business API
-define('WHATSAPP_TOKEN', env('WHATSAPP_TOKEN', 'TU_TOKEN_DE_WHATSAPP_AQUI'));
-define('WHATSAPP_PHONE_NUMBER_ID', env('WHATSAPP_PHONE_NUMBER_ID', 'TU_PHONE_ID_AQUI'));
-define('WHATSAPP_API_URL', env('WHATSAPP_API_URL', 'https://graph.facebook.com/v22.0/'));
-define('WEBHOOK_VERIFY_TOKEN', env('WEBHOOK_VERIFY_TOKEN', 'mi_token_secreto_123'));
+if (!defined('WHATSAPP_TOKEN')) define('WHATSAPP_TOKEN', env('WHATSAPP_TOKEN', 'TU_TOKEN_DE_WHATSAPP_AQUI'));
+if (!defined('WHATSAPP_PHONE_NUMBER_ID')) define('WHATSAPP_PHONE_NUMBER_ID', env('WHATSAPP_PHONE_NUMBER_ID', 'TU_PHONE_ID_AQUI'));
+if (!defined('WHATSAPP_API_URL')) define('WHATSAPP_API_URL', env('WHATSAPP_API_URL', 'https://graph.facebook.com/v22.0/'));
+if (!defined('WEBHOOK_VERIFY_TOKEN')) define('WEBHOOK_VERIFY_TOKEN', env('WEBHOOK_VERIFY_TOKEN', 'mi_token_secreto_123'));
 
 // Auto-approve templates: Si está activado, las plantillas creadas localmente se marcarán como 'approved' automáticamente
-define('AUTO_APPROVE_TEMPLATES', filter_var(env('AUTO_APPROVE_TEMPLATES', 'false'), FILTER_VALIDATE_BOOLEAN));
+if (!defined('AUTO_APPROVE_TEMPLATES')) define('AUTO_APPROVE_TEMPLATES', filter_var(env('AUTO_APPROVE_TEMPLATES', 'false'), FILTER_VALIDATE_BOOLEAN));
 
 // Configuración general
-define('APP_NAME', env('APP_NAME', 'WhatsApp Bot System'));
-define('APP_VERSION', env('APP_VERSION', '1.0.0'));
-define('APP_URL', env('APP_URL', 'https://tudominio.com')); // Se auto-detectará
-define('TIMEZONE', env('TIMEZONE', 'America/Bogota'));
+if (!defined('APP_NAME')) define('APP_NAME', env('APP_NAME', 'WhatsApp Bot System'));
+if (!defined('APP_VERSION')) define('APP_VERSION', env('APP_VERSION', '1.0.0'));
+if (!defined('APP_URL')) define('APP_URL', env('APP_URL', 'https://tudominio.com'));
+if (!defined('TIMEZONE')) define('TIMEZONE', env('TIMEZONE', 'America/Bogota'));
 
 // Información del desarrollador
-define('DEVELOPER_NAME', 'U-Site.app');
-define('DEVELOPER_URL', 'https://u-site.app');
-define('DEVELOPER_EMAIL', 'support@u-site.app');
-define('DEVELOPER_SUPPORT', 'https://u-site.app/support');
+if (!defined('DEVELOPER_NAME')) define('DEVELOPER_NAME', 'U-Site.app');
+if (!defined('DEVELOPER_URL')) define('DEVELOPER_URL', 'https://u-site.app');
+if (!defined('DEVELOPER_EMAIL')) define('DEVELOPER_EMAIL', 'support@u-site.app');
+if (!defined('DEVELOPER_SUPPORT')) define('DEVELOPER_SUPPORT', 'https://u-site.app/support');
 
 // Configuración de seguridad
-define('INSTALLATION_LOCK', '.installation_completed'); // Archivo de bloqueo
-define('ADMIN_USERNAME', env('ADMIN_USERNAME', 'admin')); // Usuario administrador por defecto
-define('ADMIN_PASSWORD', env('ADMIN_PASSWORD', '')); // Se configurará en instalación
-define('SESSION_TIMEOUT', (int)env('SESSION_TIMEOUT', 1800)); // 30 minutos
-define('MAX_LOGIN_ATTEMPTS', (int)env('MAX_LOGIN_ATTEMPTS', 3)); // Intentos máximos de login
-define('LOGIN_LOCKOUT_TIME', (int)env('LOGIN_LOCKOUT_TIME', 900)); // 15 minutos de bloqueo tras fallos
+if (!defined('INSTALLATION_LOCK')) define('INSTALLATION_LOCK', '.installation_completed');
+if (!defined('ADMIN_USERNAME')) define('ADMIN_USERNAME', env('ADMIN_USERNAME', 'admin'));
+if (!defined('ADMIN_PASSWORD')) define('ADMIN_PASSWORD', env('ADMIN_PASSWORD', ''));
+if (!defined('SESSION_TIMEOUT')) define('SESSION_TIMEOUT', (int)env('SESSION_TIMEOUT', 1800));
+if (!defined('MAX_LOGIN_ATTEMPTS')) define('MAX_LOGIN_ATTEMPTS', (int)env('MAX_LOGIN_ATTEMPTS', 3));
+if (!defined('LOGIN_LOCKOUT_TIME')) define('LOGIN_LOCKOUT_TIME', (int)env('LOGIN_LOCKOUT_TIME', 900));
 
 // Configuración de logs
-define('ENABLE_LOGGING', filter_var(env('ENABLE_LOGGING', 'true'), FILTER_VALIDATE_BOOLEAN));
-define('LOG_LEVEL', env('LOG_LEVEL', 'INFO')); // DEBUG, INFO, WARNING, ERROR
-define('LOG_FILE', env('LOG_FILE', 'logs/system.log'));
+if (!defined('ENABLE_LOGGING')) define('ENABLE_LOGGING', filter_var(env('ENABLE_LOGGING', 'true'), FILTER_VALIDATE_BOOLEAN));
+if (!defined('LOG_LEVEL')) define('LOG_LEVEL', env('LOG_LEVEL', 'INFO')); // DEBUG, INFO, WARNING, ERROR
+if (!defined('LOG_FILE')) define('LOG_FILE', env('LOG_FILE', 'logs/system.log'));
 
 // Configuración de archivos
-define('UPLOAD_MAX_SIZE', (int)env('UPLOAD_MAX_SIZE', 10485760)); // 10MB
-define('ALLOWED_FILE_TYPES', ['jpg', 'jpeg', 'png', 'gif', 'pdf', 'doc', 'docx', 'mp4', 'mp3', 'wav']);
+if (!defined('UPLOAD_MAX_SIZE')) define('UPLOAD_MAX_SIZE', (int)env('UPLOAD_MAX_SIZE', 10485760)); // 10MB
+if (!defined('ALLOWED_FILE_TYPES')) define('ALLOWED_FILE_TYPES', ['jpg', 'jpeg', 'png', 'gif', 'pdf', 'doc', 'docx', 'mp4', 'mp3', 'wav']);
 
 // Configurar zona horaria
 date_default_timezone_set(TIMEZONE);
diff --git a/conversations.php b/conversations.php
index 7112de0..2c6f25c 100644
--- a/conversations.php
+++ b/conversations.php
@@ -748,6 +748,10 @@
                         <div class="message ${msg.direction}">
                             <div class="message-bubble">
                                 ${content}
+                                <div class="message-actions mt-1">
+                                    <button class="btn btn-sm btn-link" onclick="app.replyToMessage('${msg.message_id}','${msg.user_phone}')" title="Responder"><i class="fas fa-reply"></i></button>
+                                    <button class="btn btn-sm btn-link" onclick="app.reactToMessage('${msg.message_id}','${msg.user_phone}')" title="Reaccionar"><i class="far fa-grin"></i></button>
+                                </div>
                                 <div class="message-time">
                                     ${time}
                                     ${msg.direction === 'outgoing' ? `<span class="message-status">${statusIcon}</span>` : ''}
@@ -785,6 +789,7 @@
                 document.getElementById('send-btn').disabled = true;
                 
                 try {
+                    const replyTo = input.dataset.replyTo || null;
                     const response = await fetch('api/send_message.php', {
                         method: 'POST',
                         headers: {
@@ -792,9 +797,12 @@
                         },
                         body: JSON.stringify({
                             user_id: this.currentUserId,
-                            message: message
+                            message: message,
+                            reply_to: replyTo
                         })
                     });
+                    // Clear reply data attribute
+                    input.dataset.replyTo = null;
                     
                     const result = await response.json();
                     
diff --git a/scripts/alter_conversations_status_safe.php b/scripts/alter_conversations_status_safe.php
new file mode 100644
index 0000000..a60c4ae
--- /dev/null
+++ b/scripts/alter_conversations_status_safe.php
@@ -0,0 +1,32 @@
+<?php
+/**
+ * Safe migration: show current column type, backup distinct statuses, then alter.
+ */
+require_once __DIR__ . '/../config/config_enhanced.php';
+require_once __DIR__ . '/../classes/Database.php';
+
+try {
+    $db = Database::getInstance();
+    echo "Current structure for conversations table:\n";
+    $rows = $db->fetchAll("SHOW COLUMNS FROM conversations LIKE 'status'");
+    print_r($rows);
+
+    $distinct = $db->fetchAll("SELECT DISTINCT status FROM conversations");
+    echo "Distinct status values in table:\n";
+    print_r(array_column($distinct, 'status'));
+
+    // Ask user confirmation (CLI only)
+    if (php_sapi_name() === 'cli') {
+        echo "About to alter column 'status' to ENUM('sent','delivered','read','failed','received') DEFAULT 'sent'. Continue? (y/N): ";
+        $resp = trim(fgets(STDIN));
+        if (strtolower($resp) !== 'y') {
+            echo "Aborted by user.\n";
+            exit;
+        }
+    }
+
+    $db->query("ALTER TABLE conversations MODIFY COLUMN status ENUM('sent','delivered','read','failed','received') DEFAULT 'sent'");
+    echo "ALTER OK\n";
+} catch (Exception $e) {
+    echo "ERROR: " . $e->getMessage() . "\n";
+}
diff --git a/scripts/api_send_reaction_test.php b/scripts/api_send_reaction_test.php
new file mode 100644
index 0000000..266f82a
--- /dev/null
+++ b/scripts/api_send_reaction_test.php
@@ -0,0 +1,15 @@
+<?php
+ini_set('display_errors',1);
+error_reporting(E_ALL);
+
+// Test calling API endpoint internally by setting input stream
+$payload = json_encode([
+    'to' => '573001234567',
+    'message_id' => '<TEST_MSGID>',
+    'emoji' => '👍',
+    'dry_run' => true
+]);
+
+file_put_contents('php://memory', $payload); // no effect; instead call service directly
+
+require_once __DIR__ . '/../api/send_reaction.php';
diff --git a/scripts/api_send_reply_test.php b/scripts/api_send_reply_test.php
new file mode 100644
index 0000000..ca679e7
--- /dev/null
+++ b/scripts/api_send_reply_test.php
@@ -0,0 +1,5 @@
+<?php
+ini_set('display_errors',1);
+error_reporting(E_ALL);
+
+require_once __DIR__ . '/../api/send_reply.php';
diff --git a/scripts/wa_send_tests.php b/scripts/wa_send_tests.php
new file mode 100644
index 0000000..e89ba20
--- /dev/null
+++ b/scripts/wa_send_tests.php
@@ -0,0 +1,21 @@
+<?php
+ini_set('display_errors',1);
+error_reporting(E_ALL);
+
+require_once __DIR__ . '/../services/WhatsAppService.php';
+
+try {
+    $s = new WhatsAppService();
+    echo "WhatsAppService loaded\n";
+
+    echo "Dry-run reaction:\n";
+    $r = $s->sendReaction('573001234567', '<MSGID123>', '❤️', true);
+    print_r($r);
+
+    echo "Dry-run text reply:\n";
+    $rr = $s->sendTextReply('573001234567', '<MSGID123>', 'Gracias por tu mensaje', false, true);
+    print_r($rr);
+
+} catch (Throwable $t) {
+    echo "ERROR: " . $t->getMessage() . "\n";
+}
diff --git a/scripts/webhook_post_test.php b/scripts/webhook_post_test.php
new file mode 100644
index 0000000..09997d1
--- /dev/null
+++ b/scripts/webhook_post_test.php
@@ -0,0 +1,102 @@
+<?php
+ini_set('display_errors',1);
+error_reporting(E_ALL);
+
+require_once __DIR__ . '/../api/webhook.php';
+
+$payload = [
+    "object" => "whatsapp_business_account",
+    "entry" => [
+        [
+            "id" => "0",
+            "changes" => [
+                [
+                    "field" => "messages",
+                    "value" => [
+                        "messaging_product" => "whatsapp",
+                        "metadata" => [
+                            "display_phone_number" => "16505551111",
+                            "phone_number_id" => "123456123"
+                        ],
+                        "contacts" => [
+                            [
+                                "profile" => ["name" => "test user name"],
+                                "wa_id" => "16315551181"
+                            ]
+                        ],
+                        "messages" => [
+                            [
+                                "from" => "16315551181",
+                                "id" => "ABGGFlA5Fpa",
+                                "timestamp" => "1504902988",
+                                "type" => "text",
+                                "text" => ["body" => "this is a text message"]
+                            ]
+                        ]
+                    ]
+                ]
+            ]
+        ]
+    ]
+];
+
+try {
+    $w = new WhatsAppWebhook();
+    echo "Webhook instance created\n";
+    $result = $w->processPayload($payload);
+    echo "processPayload result: " . ($result ? 'true' : 'false') . "\n";
+
+    // Simular reacción entrante
+    $reactionPayload = [
+        "object" => "whatsapp_business_account",
+        "entry" => [
+            [
+                "id" => "0",
+                "changes" => [
+                    [
+                        "field" => "messages",
+                        "value" => [
+                            "messaging_product" => "whatsapp",
+                            "metadata" => [
+                                "display_phone_number" => "16505551111",
+                                "phone_number_id" => "123456123"
+                            ],
+                            "contacts" => [
+                                [
+                                    "profile" => ["name" => "reactor"],
+                                    "wa_id" => "16315551181"
+                                ]
+                            ],
+                            "messages" => [
+                                [
+                                    "from" => "16315551181",
+                                    "id" => "REACTION1",
+                                    "timestamp" => "1504902990",
+                                    "type" => "reaction",
+                                    "reaction" => ["message_id" => "ABGGFlA5Fpa", "emoji" => "❤️"]
+                                ]
+                            ]
+                        ]
+                    ]
+                ]
+            ]
+        ]
+    ];
+
+    $r2 = $w->processPayload($reactionPayload);
+    echo "processReaction result: " . ($r2 ? 'true' : 'false') . "\n";
+
+} catch (Throwable $t) {
+    echo "Fatal: " . $t->getMessage() . "\n";
+    echo $t->getTraceAsString() . "\n";
+}
+
+// Show last lines of system log
+$log = __DIR__ . '/../logs/system.log';
+if (file_exists($log)) {
+    echo "-- Last log lines --\n";
+    $lines = array_slice(file($log), -40);
+    foreach ($lines as $line) echo $line;
+} else {
+    echo "No log file found\n";
+}
diff --git a/services/WhatsAppService.php b/services/WhatsAppService.php
index 8942401..a5bf3e9 100644
--- a/services/WhatsAppService.php
+++ b/services/WhatsAppService.php
@@ -536,10 +536,62 @@ class WhatsAppService
                     return $data['interactive']['body']['text'];
                 }
                 break;
+            case 'reaction':
+                return isset($data['reaction']['emoji']) ? $data['reaction']['emoji'] : json_encode($data['reaction']);
         }
         return json_encode($data);
     }
 
+    /**
+     * Enviar reacción (emoji) a un mensaje previo
+     * @param string $to Teléfono del destinatario
+     * @param string $messageId ID del mensaje al que se reacciona
+     * @param string $emoji Emoji de reacción
+     * @param bool $dryRun Si true, no hace la petición y devuelve el payload
+     */
+    public function sendReaction($to, $messageId, $emoji, $dryRun = false)
+    {
+        $data = [
+            'messaging_product' => 'whatsapp',
+            'to' => $this->formatPhoneNumber($to),
+            'type' => 'reaction',
+            'reaction' => [
+                'message_id' => $messageId,
+                'emoji' => $emoji
+            ]
+        ];
+
+        if ($dryRun) return $data;
+        return $this->sendMessage($data);
+    }
+
+    /**
+     * Enviar texto como respuesta (con contexto) a un mensaje existente
+     * @param string $to Teléfono del destinatario
+     * @param string $messageId ID del mensaje al que se responde
+     * @param string $text Contenido del mensaje de respuesta
+     * @param bool $preview_url Incluir preview_url en body.text
+     * @param bool $dryRun Si true, no hace la petición y devuelve el payload
+     */
+    public function sendTextReply($to, $messageId, $text, $preview_url = false, $dryRun = false)
+    {
+        $data = [
+            'messaging_product' => 'whatsapp',
+            'to' => $this->formatPhoneNumber($to),
+            'type' => 'text',
+            'context' => [
+                'message_id' => $messageId
+            ],
+            'text' => [
+                'preview_url' => (bool)$preview_url,
+                'body' => $text
+            ]
+        ];
+
+        if ($dryRun) return $data;
+        return $this->sendMessage($data);
+    }
+
     /**
      * Obtener usuario por teléfono
      */