diff --git a/README.md b/README.md
index 15ae41d..e8b71a1 100644
--- a/README.md
+++ b/README.md
@@ -72,6 +72,10 @@
 
 ![](./src/main/resources/static/redame/img_16.png)
 
+#### 3.8 发送邮件
+
+![](./src/main/resources/static/redame/img_26.png)
+
 ### 4. 编解码工具
 
 > 编解码工具也是对开源组件 Hutool 简单封装展示
diff --git a/src/main/java/com/zhangmeng/tools/controller/MailController.java b/src/main/java/com/zhangmeng/tools/controller/MailController.java
index 299e46b..e949b5f 100644
--- a/src/main/java/com/zhangmeng/tools/controller/MailController.java
+++ b/src/main/java/com/zhangmeng/tools/controller/MailController.java
@@ -47,7 +47,7 @@ public class MailController {
     public TextField user;
 
     @FXML
-    public TextField pass;
+    public PasswordField pass;
 
     @FXML
     public TextArea content;
diff --git a/src/main/resources/fxml/mail.fxml b/src/main/resources/fxml/mail.fxml
index 6c4b533..b72ccea 100644
--- a/src/main/resources/fxml/mail.fxml
+++ b/src/main/resources/fxml/mail.fxml
@@ -8,6 +8,7 @@
 <?import javafx.scene.layout.AnchorPane?>
 <?import javafx.scene.text.Text?>
 
+<?import javafx.scene.control.PasswordField?>
 <AnchorPane prefHeight="649.0" prefWidth="1200.0" xmlns="http://javafx.com/javafx/19" xmlns:fx="http://javafx.com/fxml/1" fx:controller="com.zhangmeng.tools.controller.MailController">
    <children>
       <Label layoutX="33.0" layoutY="46.0" text="邮件服务器的SMTP地址:" />
@@ -19,7 +20,7 @@
       <Label layoutX="126.0" layoutY="163.0" text="发件人:" />
       <Label layoutX="126.0" layoutY="215.0" text="用户名:" />
       <Label layoutX="138.0" layoutY="264.0" text="密码:" />
-      <TextField fx:id="pass" layoutX="171.0" layoutY="260.0" prefHeight="25.0" prefWidth="285.0" />
+      <PasswordField fx:id="pass" layoutX="171.0" layoutY="260.0" prefHeight="25.0" prefWidth="285.0" />
       <Text layoutX="471.0" layoutY="59.0" strokeType="OUTSIDE" strokeWidth="0.0" text="(可选，默认为smtp.&lt;发件人邮箱后缀&gt;)" />
       <Text layoutX="471.0" layoutY="119.0" strokeType="OUTSIDE" strokeWidth="0.0" text="(可选，默认25)" />
       <Text layoutX="471.0" layoutY="176.0" strokeType="OUTSIDE" strokeWidth="0.0" text="(必须正确，否则发送失败)" />
diff --git a/src/main/resources/static/redame/img_26.png b/src/main/resources/static/redame/img_26.png
new file mode 100644
index 0000000..bb4a4a5
Binary files /dev/null and b/src/main/resources/static/redame/img_26.png differ