diff --git a/composer.json b/composer.json
index ca3c6d8..b517d77 100644
--- a/composer.json
+++ b/composer.json
@@ -3,7 +3,8 @@
   "description": "Manage deals in LBC",
   "type": "project",
   "require": {
-    "shikiryu/lbcreposter-api": "0.*"
+    "shikiryu/lbcreposter-api": "0.*",
+    "monolog/monolog": "^1.23"
   },
   "require-dev": {
     "phpunit/phpunit": "^5.7"
@@ -17,4 +18,4 @@
   "autoload": {
     "psr-4": {}
   }
-}
\ No newline at end of file
+}
diff --git a/composer.lock b/composer.lock
index 1a31a26..5d23e05 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,8 +4,8 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
         "This file is @generated automatically"
     ],
-    "hash": "1f27833b156f7e100122870f2bf123e3",
-    "content-hash": "818e49fe8e9ffc7b1f4a8e88edc1f278",
+    "hash": "da5cf0fa9c9ce6bd3e2984db7c5f28b8",
+    "content-hash": "95d6dcaa6784485a4831674141dabf0d",
     "packages": [
         {
             "name": "fabpot/goutte",
@@ -237,6 +237,84 @@
             ],
             "time": "2017-03-20 17:10:46"
         },
+        {
+            "name": "monolog/monolog",
+            "version": "1.23.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/Seldaek/monolog.git",
+                "reference": "fd8c787753b3a2ad11bc60c063cff1358a32a3b4"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/Seldaek/monolog/zipball/fd8c787753b3a2ad11bc60c063cff1358a32a3b4",
+                "reference": "fd8c787753b3a2ad11bc60c063cff1358a32a3b4",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.0",
+                "psr/log": "~1.0"
+            },
+            "provide": {
+                "psr/log-implementation": "1.0.0"
+            },
+            "require-dev": {
+                "aws/aws-sdk-php": "^2.4.9 || ^3.0",
+                "doctrine/couchdb": "~1.0@dev",
+                "graylog2/gelf-php": "~1.0",
+                "jakub-onderka/php-parallel-lint": "0.9",
+                "php-amqplib/php-amqplib": "~2.4",
+                "php-console/php-console": "^3.1.3",
+                "phpunit/phpunit": "~4.5",
+                "phpunit/phpunit-mock-objects": "2.3.0",
+                "ruflin/elastica": ">=0.90 <3.0",
+                "sentry/sentry": "^0.13",
+                "swiftmailer/swiftmailer": "^5.3|^6.0"
+            },
+            "suggest": {
+                "aws/aws-sdk-php": "Allow sending log messages to AWS services like DynamoDB",
+                "doctrine/couchdb": "Allow sending log messages to a CouchDB server",
+                "ext-amqp": "Allow sending log messages to an AMQP server (1.0+ required)",
+                "ext-mongo": "Allow sending log messages to a MongoDB server",
+                "graylog2/gelf-php": "Allow sending log messages to a GrayLog2 server",
+                "mongodb/mongodb": "Allow sending log messages to a MongoDB server via PHP Driver",
+                "php-amqplib/php-amqplib": "Allow sending log messages to an AMQP server using php-amqplib",
+                "php-console/php-console": "Allow sending log messages to Google Chrome",
+                "rollbar/rollbar": "Allow sending log messages to Rollbar",
+                "ruflin/elastica": "Allow sending log messages to an Elastic Search server",
+                "sentry/sentry": "Allow sending log messages to a Sentry server"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Monolog\\": "src/Monolog"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Jordi Boggiano",
+                    "email": "j.boggiano@seld.be",
+                    "homepage": "http://seld.be"
+                }
+            ],
+            "description": "Sends your logs to files, sockets, inboxes, databases and various web services",
+            "homepage": "http://github.com/Seldaek/monolog",
+            "keywords": [
+                "log",
+                "logging",
+                "psr-3"
+            ],
+            "time": "2017-06-19 01:22:40"
+        },
         {
             "name": "psr/http-message",
             "version": "1.0.1",
@@ -287,13 +365,60 @@
             ],
             "time": "2016-08-06 14:39:51"
         },
+        {
+            "name": "psr/log",
+            "version": "1.0.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/log.git",
+                "reference": "4ebe3a8bf773a19edfe0a84b6585ba3d401b724d"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/log/zipball/4ebe3a8bf773a19edfe0a84b6585ba3d401b724d",
+                "reference": "4ebe3a8bf773a19edfe0a84b6585ba3d401b724d",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Log\\": "Psr/Log/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interface for logging libraries",
+            "homepage": "https://github.com/php-fig/log",
+            "keywords": [
+                "log",
+                "psr",
+                "psr-3"
+            ],
+            "time": "2016-10-10 12:19:37"
+        },
         {
             "name": "shikiryu/lbcreposter-api",
-            "version": "dev-master",
+            "version": "0.1.1",
             "source": {
                 "type": "git",
                 "url": "https://git.shikiryu.com/Shikiryu/LBCReposter-api.git",
-                "reference": "768af6e636c33af05e7a9a28aa5625bee13514de"
+                "reference": "ac21f74c11878955e86e74115f70408e590936f5"
             },
             "require": {
                 "fabpot/goutte": "^3.1"
@@ -315,7 +440,7 @@
                 }
             ],
             "description": "Manage deals in LBC",
-            "time": "2017-09-30 13:42:28"
+            "time": "2017-11-07 20:24:59"
         },
         {
             "name": "symfony/browser-kit",
@@ -1860,9 +1985,7 @@
     ],
     "aliases": [],
     "minimum-stability": "stable",
-    "stability-flags": {
-        "shikiryu/lbcreposter-api": 20
-    },
+    "stability-flags": [],
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": [],
diff --git a/cron.php b/cron.php
index 6c34334..d17d4bd 100644
--- a/cron.php
+++ b/cron.php
@@ -1,12 +1,22 @@
 <?php
 include __DIR__ . '/vendor/autoload.php';
 
+use Monolog\Logger;
+use Monolog\Handler\StreamHandler;
+
 define('APP_DIR', __DIR__);
 define('DEALS_DIR', sprintf('%s/deals', APP_DIR));
 define('LOGS_DIR', sprintf('%s/logs', APP_DIR));
 define('NEW_DEALS_DIR', sprintf('%s/deals/new', APP_DIR));
 define('EXISTING_DEALS_DIR', sprintf('%s/deals/list', APP_DIR));
 define('BACKUP_DEALS_DIR', sprintf('%s/deals/backup', APP_DIR));
+define('LOG_MAIL_TO', '');
+define('LOG_MAIL_SUBJECT', '[LBCReposter] erreur cron');
+define('LOG_MAIL_FROM', '');
+
+$log = new Logger('lbcreposter');
+$log->pushHandler(new StreamHandler(LOGS_DIR.'/cron.log', Logger::WARNING));
+$log->pushHandler(new \Monolog\Handler\NativeMailerHandler(LOG_MAIL_TO, LOG_MAIL_SUBJECT, LOG_MAIL_FROM));
 
 $existing_deals = [];
 foreach (new DirectoryIterator(EXISTING_DEALS_DIR) as $existing_deal) {
@@ -36,7 +46,7 @@ function delete_folder($folder) {
     return rmdir($folder);
 }
 
-echo sprintf('%u annonces locales, normalement en ligne.%s', count($existing_deals), "\n");
+$log->info(sprintf('%u annonces locales, normalement en ligne.', count($existing_deals)));
 $script_params = parse_ini_file(sprintf('%s/lbcreposter.ini', DEALS_DIR), true);
 $config = new \Shikiryu\LBCReposter\Config($script_params);
 $account = new \Shikiryu\LBCReposter\Account($config);
@@ -53,12 +63,12 @@ if ($actions->connect()) {
     foreach ($deals as $i => $deal) {
         // l'annonce existe déjà
         if (in_array($deal->getId(), array_keys($existing_deals))) {
-            echo sprintf('L\'annonce %s existe déjà, ', $deal->getId());
+            $log->info(sprintf('L\'annonce %s existe déjà, ', $deal->getId()));
             // si elle est vieille, on supprime et on recréé
             if ($existing_deals[$deal->getId()]->getDateCreation()->add(new DateInterval('P1W')) <= (new DateTime())) {
                 // Suppression
-                echo sprintf('elle est vieille (%s), on la supprime. %s', $existing_deals[$deal->getId()]->getDateCreation()->format('d/m/Y H:i'), "\n");
-                $actions->delete($deal);
+                $log->error(sprintf('elle est vieille (%s), on la supprime.', $existing_deals[$deal->getId()]->getDateCreation()->format('d/m/Y H:i')));
+//                $actions->delete($deal);
                 // Backup
                 if (!file_exists(BACKUP_DEALS_DIR.'/'.$deal->getId())) {
                     mkdir(BACKUP_DEALS_DIR . '/' . $deal->getId());
@@ -68,11 +78,11 @@ if ($actions->connect()) {
                 rename(EXISTING_DEALS_DIR.'/'.$deal->getId(), NEW_DEALS_DIR.'/'.$deal->getId());
             } else {
                 // sinon on la laisse
-                echo sprintf('et tout va bien. %s', "\n");
+                $log->info('et tout va bien.');
             }
             unset($deals_to_backup[$deal->getId()]);
         } else {
-            echo sprintf('L\'annonce %s n\'existait pas et est sauvegardée. %s', $deal->getSubject(), "\n");
+            $log->error(sprintf('L\'annonce %s n\'existait pas et est sauvegardée.', $deal->getSubject()));
             // Une annonce non sauvegardée ? on la sauve
             $deal->save(EXISTING_DEALS_DIR);
         }
@@ -91,17 +101,18 @@ if ($actions->connect()) {
     foreach (new DirectoryIterator(NEW_DEALS_DIR) as $new_deal) {
         if ($new_deal->isDir() && !$new_deal->isDot()) {
             $deal_to_create = \Shikiryu\LBCReposter\Deal::fromJSON($new_deal->getRealPath() . '/data.json');
-            if ($actions->create($deal_to_create)) {
+            /*if ($actions->create($deal_to_create)) {
                 delete_folder($new_deal->getRealPath());
-                echo sprintf('L\'annonce %s a bien été créée. %s', $deal_to_create->getSubject(), "\n");
+                $log->info(sprintf('L\'annonce %s a bien été créée.', $deal_to_create->getSubject()));
                 break;
             } else {
-                echo sprintf('L\'annonce %s n\'a pas bien été créée. %s', $deal_to_create->getSubject(), "\n");
-            }
+                $log->error(sprintf('L\'annonce %s n\'a pas bien été créée. %s', $deal_to_create->getSubject()));
+            }*/
             sleep(30);
         }
     }
 } else {
-    echo 'not connected';
+    $log->error('not connected');
 }
 
+$log->info('CRON terminé !');