diff --git a/queue_message/receiver.py b/queue_message/receiver.py
index 9d43d32..fabfa18 100644
--- a/queue_message/receiver.py
+++ b/queue_message/receiver.py
@@ -94,6 +94,7 @@ class Receiver(threading.Thread):
         if len(self.contact_list) > 0:
             captchaResultGetter = CaptchaResultGetter()
             print("contact number is {}".format(len(self.contact_list)))
+            self.contact_list = filter_contacts(self.contact_list)
             for con in self.contact_list:
                 # if not is_already_sent(con):
                 print(con.mail)
@@ -109,9 +110,12 @@ class Receiver(threading.Thread):
                     self.valid_csrf = None
                 # else:
                 #     print(con.mail + "--> skip")
+            time.sleep(random.randint(1, 2))
             ch.basic_ack(delivery_tag=method.delivery_tag)
         else:
             print("empty list")
+            time.sleep(120)
+            ch.basic_reject(delivery_tag=method.delivery_tag, requeue=True)
 
     def run(self):
         print(threading.currentThread().name + " starts")