newsletter config try

site/config/config.php

@@ -8,15 +8,12 @@ return array(
   ),
   'email' => [
     'transport' => [
-      'type'      => 'smtp',
-      'host'      => 'smtp.outlook.com',
-      'port'      => 587,
-      'security'  => 'tls',
-      'auth'      => true,
-      'username'  => 'adrien.payet@outlook.com',
-      'password'  => 't8nVpxCpEZcqH8y'
+      'type'     => 'smtp',
+      'host'     => 'mail.infomaniak.com',
+      'port'     => 465,
+      'security' => true
     ]
-  ],
+    ],
   'routes' => array(
     require __DIR__ . '/routes/virtual-category.php',
     require __DIR__ . '/routes/send-newsletter.php',