diff --git a/src/main/java/live/tomey/api/express/unit/MailUnit.java b/src/main/java/live/tomey/api/express/unit/MailUnit.java
index cb5b115..aefd792 100644
--- a/src/main/java/live/tomey/api/express/unit/MailUnit.java
+++ b/src/main/java/live/tomey/api/express/unit/MailUnit.java
@@ -82,7 +82,7 @@ public class MailUnit {
             // 7: 保存设置
             message.saveChanges();
 
-            session.setDebug(true);
+            session.setDebug(false);
             // 4. 根据 Session 获取邮件传输对象
             transport = session.getTransport();
             // 5.登录邮箱