diff --git a/build.gradle b/build.gradle
index 7de1d55..7768e69 100644
--- a/build.gradle
+++ b/build.gradle
@@ -26,6 +26,9 @@ dependencies {
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
 	implementation 'org.springframework.boot:spring-boot-starter-validation'
 
+	//이메일 전송
+	implementation 'org.springframework.boot:spring-boot-starter-mail:2.7.1'
+
 }
 
 
diff --git a/src/main/java/com/example/firstproject/controller/EmailController.java b/src/main/java/com/example/firstproject/controller/EmailController.java
new file mode 100644
index 0000000..50fb8cf
--- /dev/null
+++ b/src/main/java/com/example/firstproject/controller/EmailController.java
@@ -0,0 +1,24 @@
+package com.example.firstproject.controller;
+
+import com.example.firstproject.service.impl.EmailServiceImpl;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+public class EmailController {
+
+    // 회원가입 메일 서비스
+    @Autowired
+    EmailServiceImpl EmailServiceImpl;
+
+    @PostMapping("login/mailConfirm")
+    @ResponseBody
+    String mailConfirm(@RequestParam("email") String email) throws Exception {
+
+        String code = EmailServiceImpl.sendSimpleMessage(email);
+        System.out.println("인증코드 : " + code);
+        return code;
+    }
+
+}
diff --git a/src/main/java/com/example/firstproject/service/EmailService.java b/src/main/java/com/example/firstproject/service/EmailService.java
new file mode 100644
index 0000000..7cf99a8
--- /dev/null
+++ b/src/main/java/com/example/firstproject/service/EmailService.java
@@ -0,0 +1,19 @@
+package com.example.firstproject.service;
+
+import javax.mail.MessagingException;
+import javax.mail.internet.MimeMessage;
+import java.io.UnsupportedEncodingException;
+
+public interface EmailService {
+
+    //메일 내용 작성
+    MimeMessage createMessage(String to) throws MessagingException, UnsupportedEncodingException;
+    //MessagingException는 메세지 관련 예외처리를 위한 예외 클래스
+    //UnsupportedEncodingException는 지원되지 않는 인코딩을 처리하기 위한 예외 클래스
+
+    // 랜덤 인증 코드 전송
+    String createKey();
+
+    //메일 전송
+    String sendSimpleMessage(String to) throws Exception;
+}
diff --git a/src/main/java/com/example/firstproject/service/impl/EmailServiceImpl.java b/src/main/java/com/example/firstproject/service/impl/EmailServiceImpl.java
new file mode 100644
index 0000000..ecf9387
--- /dev/null
+++ b/src/main/java/com/example/firstproject/service/impl/EmailServiceImpl.java
@@ -0,0 +1,89 @@
+package com.example.firstproject.service.impl;
+
+import com.example.firstproject.service.EmailService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.mail.MailException;
+import org.springframework.mail.javamail.JavaMailSender;
+import org.springframework.stereotype.Service;
+
+import javax.mail.Message;
+import javax.mail.MessagingException;
+import javax.mail.internet.InternetAddress;
+import javax.mail.internet.MimeMessage;
+import java.io.UnsupportedEncodingException;
+import java.util.Random;
+
+@Service //bean을 만들고, 객체를 생성
+public class EmailServiceImpl implements EmailService {//extends는 클래스 확장, implements는 인터페이스를 구현
+
+    @Autowired
+    JavaMailSender emailSender;//의존성 주입
+
+    private String ePw; //인증번호
+
+    @Override
+    public MimeMessage createMessage(String to) throws MessagingException, UnsupportedEncodingException {
+
+        MimeMessage message = emailSender.createMimeMessage();
+
+        message.addRecipients(Message.RecipientType.TO, to);  //보내는 대상
+        message.setSubject("Froot 회원가입 이메일 인증");
+
+        String msg = "";
+        msg += "<div style='margin:100px'>";
+        msg += "<h1>안녕하세요</h1>";
+        msg += "<h3>회원가입 인증 코드 입니다.</h3>";
+        msg += "<br>";
+        msg += ePw + "<div><br/>";
+        msg += "</div>";
+
+        // 내용, charset 타입, subtype / StringBuffer 타입 인자로 못들어간다.
+        message.setText(msg, "utf-8", "html");// 내용, charset 타입, subtype
+        // 보내는 사람의 이메일 주소, 보내는 사람 이름
+        message.setFrom(new InternetAddress("yongwoo1207@naver.com", "Froot admin"));// 보내는 사람
+
+        return message;
+    }
+
+    // 랜덤 인증 코드 만들기
+    @Override
+    public String createKey() {
+        Random random = new Random();
+        int num = random.nextInt(8);
+        String key = String.valueOf(num);
+        return key;
+    }
+
+    // 메일 발송
+    // sendSimpleMessage 의 매개변수로 들어온 to 는 곧 이메일 주소가 되고,
+    // MimeMessage 객체 안에 내가 전송할 메일의 내용을 담는다.
+    // 그리고 bean 으로 등록해둔 javaMail 객체를 사용해서 이메일 send!!
+    @Override
+    public String sendSimpleMessage(String to) throws Exception {
+        ePw = createKey();
+        MimeMessage message = createMessage(to); //메일 발송
+        try { //여긴 예외`처리 그냥 복사해옴.
+            emailSender.send(message);
+        } catch (MailException es){
+            es.printStackTrace();
+            throw new IllegalAccessException();
+        }
+
+        return ePw; // 메일로 보냈던 인증 코드를 서버로 반환
+    }
+}
+
+
+
+/*    @Override
+    public void sendEmail(String to, String subject, String message){
+        SimpleMailMessage simpleMailMessage = new SimpleMailMessage();
+        simpleMailMessage.setFrom("yongwoo1207@naver.com");
+        simpleMailMessage.setTo(to);
+        simpleMailMessage.setSubject(subject);
+        simpleMailMessage.setText(message);
+
+        this.mailSender.send(simpleMailMessage);
+    }*/
+
+
diff --git a/src/main/java/config/EmailConfig.java b/src/main/java/config/EmailConfig.java
new file mode 100644
index 0000000..e188883
--- /dev/null
+++ b/src/main/java/config/EmailConfig.java
@@ -0,0 +1,24 @@
+package config;
+
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.mail.javamail.JavaMailSender;
+import org.springframework.mail.javamail.JavaMailSenderImpl;
+import resource.EmailResource;
+
+import java.util.Properties;
+
+@Configuration
+public class EmailConfig {
+    @Bean
+    public JavaMailSender javaMailService() {
+        JavaMailSenderImpl javaMailSender = new JavaMailSenderImpl();
+        javaMailSender.setHost(EmailResource.getMailserver()); // 메일 도메인 서버 주소
+        javaMailSender.setUsername(EmailResource.getUsername()); // 메일 유저 이름
+        javaMailSender.setPassword(EmailResource.getUserpwd()); // 메일 패스워드
+        javaMailSender.setPort(465); // 메일 인증서버 포트
+
+        return javaMailSender;
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/resource/EmailResource.java b/src/main/java/resource/EmailResource.java
new file mode 100644
index 0000000..104cc9d
--- /dev/null
+++ b/src/main/java/resource/EmailResource.java
@@ -0,0 +1,15 @@
+package resource;
+
+public class EmailResource {
+    public static String getMailserver() {
+        return "smtp.naver.com";
+    }
+
+    public static String getUsername() {
+        return "이메일 입력하기";
+    }
+    public static String getUserpwd() {
+        return "비밀번호 입력하기";
+    }
+
+}
diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties
index 59cfca7..50a9865 100644
--- a/src/main/resources/application.properties
+++ b/src/main/resources/application.properties
@@ -31,3 +31,10 @@ spring.datasource.data=classpath:/data.sql
 spring.datasource.initialization-mode=never
 spring.jpa.hibernate.ddl-auto=update
 
+
+mail.smtp.socketFactory.port=465
+mail.smtp.auth=SSL
+mail.smtp.starttls.enable=true
+mail.smtp.starttls.required=true
+mail.smtp.socketFactory.fallback=true
+mail.smtp.socketFactory.class=javax.net.ssl.SSLSocketFactory
\ No newline at end of file