diff --git a/main.py b/main.py
index 1ce1ca4..c6fe317 100644
--- a/main.py
+++ b/main.py
@@ -10,7 +10,7 @@ import re
 import trio
 import trio_websocket as ws
 
-from selenium.common.exceptions import StaleElementReferenceException, TimeoutException, InvalidSessionIdException
+from selenium.common.exceptions import StaleElementReferenceException, TimeoutException
 from selenium.webdriver import Chrome, ChromeOptions
 from selenium.webdriver.common.action_chains import ActionChains
 from selenium.webdriver.common.by import By
@@ -349,7 +349,8 @@ def main(driver: WebDriver):
             axis = index[current]
 
             occurrence = occurrences.setdefault(code, [0]) if code else [0]
-            outbox.put(Command('setProgress', cursor, name, recipient, sent, warnings, errors))
+            try: outbox.put(Command('setProgress', cursor, name, recipient, sent, warnings, errors))
+            except ShutDown: break
 
             if (remarks := frame.loc[axis, cs]) is not None and str(remarks).strip():
                 tell(f'已跳过项目 {recipient}')
@@ -363,10 +364,10 @@ def main(driver: WebDriver):
 
             while status.isactive():
                 try:
+                    tell('正在发送：%s (%.2f %%)' % (recipient, current / limit * 100))
                     clean = True
                     attempt += 1
                     request = get_request()
-                    tell('正在发送：%s (%.2f %%)' % (recipient, current / limit * 100))
 
                     if (target := get_address()) != address:
                         exception = Exception(f'邮件发件地址与设定不一致\n>> {address}\n>> {target}')