diff --git a/unipay/providers/transfer.py b/unipay/providers/transfer.py
index 14f4d45..ecd9abc 100644
--- a/unipay/providers/transfer.py
+++ b/unipay/providers/transfer.py
@@ -176,7 +176,7 @@ class TransferGateway(Gateway):
 							try:
 								mail_date = parsedate_to_datetime(mail_date_str)
 								if mail_date < cutoff:
-									continue
+									break  # 从新到旧扫描，遇旧邮件停止
 							except:
 								continue
 						else:
@@ -265,19 +265,16 @@ class TransferGateway(Gateway):
 				idx = str(i)
 
 				mail_date_str = getattr(mail, 'date', None)
-				skip_date = False
 				if mail_date_str:
 					try:
 						mail_date = parsedate_to_datetime(mail_date_str)
 						if mail_date < cutoff:
-							skip_date = True
+							debug('mail[' + idx + '] date=' + str(mail_date_str) + ' older than 2 days, stop scanning')
+							break  # 从新到旧扫描，遇到旧邮件后面都更旧
 					except Exception as de:
 						debug('mail[' + idx + '] date parse error: ' + str(mail_date_str) + ' -> ' + str(de))
 				else:
-					debug('mail[' + idx + '] no date header, skipping date filter')
-					skip_date = True  # 没有日期头的邮件跳过
-				if skip_date:
-					debug('mail[' + idx + '] date=' + str(mail_date_str) + ' older than 2 days or no date, skip')
+					debug('mail[' + idx + '] no date header, skip')
 					continue
 
 				from_addr = getattr(mail, 'mailfrom', '?')