diff --git a/config_panel.toml b/config_panel.toml
index 0225bb7..cc56fb7 100644
--- a/config_panel.toml
+++ b/config_panel.toml
@@ -54,3 +54,8 @@ name.fr = "Configuration SMTP"
         ask.fr = "Adresse e-mail expéditrice des messages"
         type = "string"
         bind = "MAIL_SENDER:__INSTALL_DIR__/config.local.php"
+
+    [main.smtp.mail_return_path]
+        ask.fr = "Adresse e-mail destinée à recevoir les erreurs de mail"
+        type = "string"
+        bind = "MAIL_RETURN_PATH:__INSTALL_DIR__/config.local.php"