diff --git a/main.py b/main.py
index 6919e42..03e204b 100644
--- a/main.py
+++ b/main.py
@@ -7,6 +7,7 @@ from src.logs.AppLogging import init_logger
 from src.pojo.ModeEnum import ModeEnum
 from src.pojo.contact_pojo import ContactPojo
 from src.proxy.proxy_type import ProxyType
+from src.utils.black_list_checker import can_send_request
 from src.utils.excel_reader import ExcelHelper
 from src.workers.commandor_page import CommandorPage
 
@@ -24,14 +25,16 @@ def start_book(start_number, end_number, store_choose_state=0, max_workers=10, p
     if len(all_contacts) <= end_number:
         end_number = len(all_contacts)
     contacts = all_contacts[start_number - 1: end_number]
-    logger.info(contacts)
     with ThreadPoolExecutor(max_workers=max_workers) as executor:
         for contact in contacts:
             proxy = get_proxy(proxy_type)
             # start the task in thread
-            executor.submit(
-                CommandorPage(contact, store_type=store_choose_state, proxy_type=proxy_type, mode=mode).start_page,
-                proxy)
+            if can_send_request(contact):
+                executor.submit(
+                    CommandorPage(contact, store_type=store_choose_state, proxy_type=proxy_type, mode=mode).start_page,
+                    proxy)
+            else:
+                logger.info("do not send request --> skip")
 
 
 def recheck_the_captcha_error_contacts(on_no_contact_found, store_type=0, mode: ModeEnum = ModeEnum.MANUAL,
diff --git a/src/db/mongo_manager.py b/src/db/mongo_manager.py
index 2724238..b651f7c 100644
--- a/src/db/mongo_manager.py
+++ b/src/db/mongo_manager.py
@@ -52,6 +52,17 @@ class MongoDbManager:
         except Exception as error:
             self.logger.info(error)
 
+    def get_blacklist_contacts(self) -> list:
+        collection_name = BLACK_LIST
+        black_list_contacts = []
+        try:
+            collection_to_use = self.db[collection_name]
+            for document in collection_to_use.find():
+                black_list_contacts.append(BlackContactPojo.from_firestore_dict(document))
+        except Exception as error:
+            self.logger.info(error)
+        return black_list_contacts
+
     def get_captcha_error_contacts_for_current_day(self) -> list:
         day = str(datetime.date.today())
         collection_name = CAPTCHA_ERROR_COLLECTION_PREFIX + day
@@ -71,9 +82,18 @@ class MongoDbManager:
         except Exception as error:
             self.logger.info(error)
 
+    def remove_contact_from_black_list(self, contact: ContactPojo):
+        collection_name = BLACK_LIST
+        collection = self.db[collection_name]
+        to_delete = {'_id': contact.mail}
+        try:
+            collection.delete_one(to_delete)
+        except Exception as error:
+            self.logger.info(error)
+
 
 if __name__ == '__main__':
     db_manager = MongoDbManager()
-    contact = ContactPojo(phone_number='0755667750', passport_number='123456789', last_name='PAN', first_name='Lei',
-                          mail='panleicim@gmail.com')
-    print(db_manager.insert_blacklist_contact(contact))
+    black_list = db_manager.get_blacklist_contacts()
+    for contact in black_list:
+        print(contact)
\ No newline at end of file
diff --git a/src/utils/black_list_checker.py b/src/utils/black_list_checker.py
new file mode 100644
index 0000000..6914028
--- /dev/null
+++ b/src/utils/black_list_checker.py
@@ -0,0 +1,16 @@
+import time
+
+from src import params
+from src.pojo.contact_pojo import ContactPojo
+
+SEVEN_DAYS_IN_S = 7 * 24 * 3600
+
+
+def can_send_request(contact: ContactPojo) -> bool:
+    black_list = params.mongo_store_manager.get_blacklist_contacts()
+    for black_contact in black_list:
+        if contact.mail == black_contact.mail:
+            # check date
+            return black_contact.update_at_in_s + SEVEN_DAYS_IN_S < time.time()
+
+    return True
diff --git a/src/workers/commandor_page.py b/src/workers/commandor_page.py
index 666c2e5..51af8be 100644
--- a/src/workers/commandor_page.py
+++ b/src/workers/commandor_page.py
@@ -332,6 +332,7 @@ class CommandorPage:
         params.firebase_store_manager.save(result)
         params.local_db_manager.handle_success(result)
         params.mongo_store_manager.delete_captcha_error_contact_for_current_day(self.contact)
+        params.mongo_store_manager.remove_contact_from_black_list(self.contact)
         if status is PublishType.SUCCESS:
             self.on_success(result)
             time.sleep(2)