diff --git a/labx-15/labx-15-admin-04-adminserver-mail/pom.xml b/labx-15/labx-15-admin-04-adminserver-mail/pom.xml
new file mode 100644
index 00000000..03a1794c
--- /dev/null
+++ b/labx-15/labx-15-admin-04-adminserver-mail/pom.xml
@@ -0,0 +1,78 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <parent>
+        <artifactId>labx-15</artifactId>
+        <groupId>cn.iocoder.springboot.labs</groupId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>labx-15-admin-04-adminserver-mail</artifactId>
+
+    <properties>
+        <maven.compiler.target>1.8</maven.compiler.target>
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <spring.boot.version>2.2.4.RELEASE</spring.boot.version>
+        <spring.cloud.version>Hoxton.SR1</spring.cloud.version>
+        <spring.cloud.alibaba.version>2.2.0.RELEASE</spring.cloud.alibaba.version>
+    </properties>
+
+    <!--
+        引入 Spring Boot、Spring Cloud、Spring Cloud Alibaba 三者 BOM 文件，进行依赖版本的管理，防止不兼容。
+        在 https://dwz.cn/mcLIfNKt 文章中，Spring Cloud Alibaba 开发团队推荐了三者的依赖关系
+     -->
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-starter-parent</artifactId>
+                <version>${spring.boot.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+            <dependency>
+                <groupId>org.springframework.cloud</groupId>
+                <artifactId>spring-cloud-dependencies</artifactId>
+                <version>${spring.cloud.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+            <dependency>
+                <groupId>com.alibaba.cloud</groupId>
+                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
+                <version>${spring.cloud.alibaba.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <dependencies>
+        <!-- 实现对 Spring Boot Admin Server 的自动化配置 -->
+        <!--
+            包含 1. spring-boot-admin-server ：Server 端
+                2. spring-boot-admin-server-ui ：UI 界面
+                3. spring-boot-admin-server-cloud ：对 Spring Cloud 的接入
+        -->
+        <dependency>
+            <groupId>de.codecentric</groupId>
+            <artifactId>spring-boot-admin-starter-server</artifactId>
+            <version>2.2.2</version>
+        </dependency>
+
+        <!-- 引入 Spring Cloud Alibaba Nacos Discovery 相关依赖，将 Nacos 作为注册中心，并实现对其的自动配置 -->
+        <dependency>
+            <groupId>com.alibaba.cloud</groupId>
+            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
+        </dependency>
+
+        <!-- 实现对 Java Mail 的自动化配置 -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-mail</artifactId>
+        </dependency>
+    </dependencies>
+
+</project>
diff --git a/labx-15/labx-15-admin-04-adminserver-mail/src/main/java/cn/iocoder/springcloud/labx15/adminserver/AdminServerApplication.java b/labx-15/labx-15-admin-04-adminserver-mail/src/main/java/cn/iocoder/springcloud/labx15/adminserver/AdminServerApplication.java
new file mode 100644
index 00000000..7f622d36
--- /dev/null
+++ b/labx-15/labx-15-admin-04-adminserver-mail/src/main/java/cn/iocoder/springcloud/labx15/adminserver/AdminServerApplication.java
@@ -0,0 +1,15 @@
+package cn.iocoder.springcloud.labx15.adminserver;
+
+import de.codecentric.boot.admin.server.config.EnableAdminServer;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+@EnableAdminServer
+public class AdminServerApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(AdminServerApplication.class, args);
+    }
+
+}
diff --git a/labx-15/labx-15-admin-04-adminserver-mail/src/main/resources/application.yaml b/labx-15/labx-15-admin-04-adminserver-mail/src/main/resources/application.yaml
new file mode 100644
index 00000000..ca80a278
--- /dev/null
+++ b/labx-15/labx-15-admin-04-adminserver-mail/src/main/resources/application.yaml
@@ -0,0 +1,22 @@
+spring:
+  application:
+    name: demo-admin-server # Spring 应用名
+  cloud:
+    nacos:
+      # Nacos 作为注册中心的配置项，对应 NacosDiscoveryProperties 配置类
+      discovery:
+        server-addr: 127.0.0.1:8848 # Nacos 服务器地址
+        service: ${spring.application.name} # 注册到 Nacos 的服务名。默认值为 ${spring.application.name}。
+
+  mail: # 配置发送告警的邮箱
+    host: smtp.126.com
+    username: wwbmlhh@126.com
+    password: '******'
+    default-encoding: UTF-8
+
+  boot:
+    admin:
+      notify:
+        mail:
+          from: ${spring.mail.username} # 告警发件人
+          to: 7685413@qq.com # 告警收件人
diff --git a/labx-15/pom.xml b/labx-15/pom.xml
index 00ff7ffb..a5e2dc6c 100644
--- a/labx-15/pom.xml
+++ b/labx-15/pom.xml
@@ -17,6 +17,8 @@
 
         <module>labx-15-admin-03-adminserver</module>
         <module>labx-15-admin-03-demo-application</module>
+
+        <module>labx-15-admin-04-adminserver-mail</module>
     </modules>
 
 </project>