diff --git a/config_default.php b/config_default.php
index ac5e721..10b1400 100644
--- a/config_default.php
+++ b/config_default.php
@@ -167,4 +167,32 @@
      */
     $config['cops_provide_kepub'] = "0";
 
+    /* 
+     * Enable and configure Send To Kindle (or Email) feature.
+     *
+     * Don't forget to authorize the sender email you configured in your Kindle's  Approved Personal Document E-mail List.  
+     *
+     * If you want to use a simple smtp server (provided by your ISP for example), you can configure it like that :
+     * $config['cops_mail_configuration'] = array( "smtp.host"     => "smtp.free.fr",
+     *                                           "smtp.username" => "",
+     *                                           "smtp.password" => "",
+     *                                           "smtp.secure"   => "",
+     *                                           "address.from"  => "cops@slucas.fr"
+     *                                           );
+     *
+     * For Gmail :
+     * $config['cops_mail_configuration'] = array( "smtp.host"     => "smtp.gmail.com",
+     *                                           "smtp.username" => "YOUR GMAIL ADRESS",
+     *                                           "smtp.password" => "YOUR GMAIL PASSWORD",
+     *                                           "smtp.secure"   => "ssl",
+     *                                           "address.from"  => "cops@slucas.fr"
+     *                                           );
+     */
+    $config['cops_mail_configuration'] = array( "smtp.host"     => "smtp.free.fr",
+                                                "smtp.username" => "",
+                                                "smtp.password" => "",
+                                                "smtp.secure"   => "",
+                                                "address.from"  => "cops@slucas.fr"
+                                                );
+
 ?>
\ No newline at end of file