diff --git a/mail/lan_mail_helper.py b/mail/lan_mail_helper.py
index 3e2c41e..c7dd1a3 100644
--- a/mail/lan_mail_helper.py
+++ b/mail/lan_mail_helper.py
@@ -9,6 +9,7 @@ from mail.mail_reader_all_contacts import find_links_to_validate_from_mail_list
 from models.mail_pojo import MailAddress
 
 host = "https://authhk.bhdata.com:30015/bhmailer?uid=482391396&sign=32d7748da00047b9a1054c81a5750365"
+is_checking = False
 
 HERMES_EMAIL = "no-reply@hermes.com"
 
@@ -92,16 +93,20 @@ def check_confirmed_mails():
 
 
 def check_all_need_to_check_emails():
-    logger = logging.getLogger()
-    _mail_list_before_filter = get_mail_list_to_check()
-    _mails = filter_mail_with_links(_mail_list_before_filter)
-    for _mail in _mails:
-        if "outlook.com" in _mail or "hotmail.com" in _mail:
-            check_mail(_mail)
-            time.sleep(2)
+    global is_checking
+    if not is_checking:
+        is_checking = True
+        logger = logging.getLogger()
+        _mail_list_before_filter = get_mail_list_to_check()
+        _mails = filter_mail_with_links(_mail_list_before_filter)
+        for _mail in _mails:
+            if "outlook.com" in _mail or "hotmail.com" in _mail:
+                check_mail(_mail)
+                time.sleep(2)
 
-    _mail_list = [MailAddress("saigecong1990@pissmail.com", "cvExXKOP8oY1D@")]
-    find_links_to_validate_from_mail_list(_mail_list, logger)
+        _mail_list = [MailAddress("saigecong1990@pissmail.com", "cvExXKOP8oY1D@")]
+        find_links_to_validate_from_mail_list(_mail_list, logger)
+        is_checking = False
 
 
 def try_to_check_all_mails():
@@ -117,7 +122,7 @@ def try_to_check_all_mails():
 
 
 if __name__ == '__main__':
-    # check_all_need_to_check_emails()
-    try_to_check_all_mails()
+    check_all_need_to_check_emails()
+    # try_to_check_all_mails()
     # check_confirmed_mails()
     # check_appointment_link_mail("hcunlvi533@outlook.com")
diff --git a/request_sender_test.py b/request_sender_test.py
index 53280ab..fa6475c 100644
--- a/request_sender_test.py
+++ b/request_sender_test.py
@@ -101,8 +101,12 @@ if __name__ == '__main__':
     #              '~/Desktop/contact_list_2024-05-21.xlsx',
     #              '~/Desktop/15_05_to_test.xlsx']
     # file_list = ['~/Desktop/15_05_to_test.xlsx', '~/Desktop/16_05_to_test.xlsx']
-    file_list = ['~/Desktop/contact_list_2025-07-11.xlsx']
-    # file_list = ['~/Desktop/contact_list_all_studio.xlsx']
+    # file_list = ['~/Desktop/contact_list_2025-07-15.xlsx']
+    # file_list = ['~/Desktop/contact_list_2025-07-28.xlsx']
+    # file_list = ['~/Desktop/contact_list_2025-06-23.xlsx']
+    # file_list = ['~/Desktop/contact_list_2025-03-11.xlsx']
+    # file_list = ['~/Desktop/contact_list_2025-05-21.xlsx']
+    file_list = ['~/Desktop/contact_list_2025-08-14.xlsx']
     # file_list = ['~/Desktop/real_name_contacts_100_27_06.xlsx']
-    send_request_for_file_list(file_list=file_list, thread_number=20,
+    send_request_for_file_list(file_list=file_list, thread_number=10,
                                data_queue_name=MORNING_DATA_CACHE, stop_at_hour=19, stop_at_mins=50)
diff --git a/workers/link_validator_with_provided_list.py b/workers/link_validator_with_provided_list.py
index ab4662b..e3574c3 100644
--- a/workers/link_validator_with_provided_list.py
+++ b/workers/link_validator_with_provided_list.py
@@ -241,8 +241,8 @@ def validate_all_links(_contact_serial_list):
     #     else:
     #         _segment_number = 1
     _thread_list = []
-    if len(_first_25_percent_links) >= 10:
-        _segment_number = 10
+    if len(_first_25_percent_links) >= 20:
+        _segment_number = 20
     else:
         _segment_number = len(_first_25_percent_links)
     for i in range(0, _segment_number):