diff --git a/smtp2qnap4slack.py b/smtp2qnap4slack.py
index 3f9076f..177f0a3 100644
--- a/smtp2qnap4slack.py
+++ b/smtp2qnap4slack.py
@@ -88,4 +88,4 @@ if __name__ == '__main__':
     handler = CustomHandler()
     controller = MyController(handler, hostname=LHOST, port=LPORT)
     controller.start()
-    print('SMTP server is running.\n')
+    input('SMTP server is running.\n')
\ No newline at end of file