diff --git a/src/main/java/com/loafle/overflow/central/module/email/dao/EmailAuthDAO.java b/src/main/java/com/loafle/overflow/central/module/email/dao/EmailAuthDAO.java
index 3cd016b..3096566 100644
--- a/src/main/java/com/loafle/overflow/central/module/email/dao/EmailAuthDAO.java
+++ b/src/main/java/com/loafle/overflow/central/module/email/dao/EmailAuthDAO.java
@@ -13,6 +13,8 @@ import java.util.List;
 public interface EmailAuthDAO extends JpaRepository<EmailAuth, Long> {
   EmailAuth findByEmailAuthKey(String emailAuthKey);
 
-  List<EmailAuth> findByMemberId(Long memberId);
+//  List<EmailAuth> findByMemberId(Long memberId);
+
+  List<EmailAuth> findByMemberIdOrderByCreateDateDesc(Long memberId);
 
 }
diff --git a/src/main/java/com/loafle/overflow/central/module/email/service/CentralEmailAuthService.java b/src/main/java/com/loafle/overflow/central/module/email/service/CentralEmailAuthService.java
index c71cb88..22eb276 100644
--- a/src/main/java/com/loafle/overflow/central/module/email/service/CentralEmailAuthService.java
+++ b/src/main/java/com/loafle/overflow/central/module/email/service/CentralEmailAuthService.java
@@ -124,7 +124,7 @@ public class CentralEmailAuthService implements EmailAuthService {
   // dZQgXM1o/Cx48X8DM+6ec/oPfqA2l/LdWtijOZ2EnWk=
 
   public List<EmailAuth> readByMember(Long memberId) {
-    return this.emailAuthDAO.findByMemberId(memberId);
+    return this.emailAuthDAO.findByMemberIdOrderByCreateDateDesc(memberId);
   }
 
   public EmailAuth modify(EmailAuth emailAuth) {
@@ -213,6 +213,7 @@ public class CentralEmailAuthService implements EmailAuthService {
 
     return auth;
   }
+
 }
 
 // EmailAuth auth = new EmailAuth();
@@ -243,4 +244,4 @@ public class CentralEmailAuthService implements EmailAuthService {
 //
 // this.emailAuthDAO.save(auth);
 //
-// return auth;
\ No newline at end of file
+// return auth;
diff --git a/src/main/java/com/loafle/overflow/central/module/member/service/CentralMemberService.java b/src/main/java/com/loafle/overflow/central/module/member/service/CentralMemberService.java
index cca6259..deb32a1 100644
--- a/src/main/java/com/loafle/overflow/central/module/member/service/CentralMemberService.java
+++ b/src/main/java/com/loafle/overflow/central/module/member/service/CentralMemberService.java
@@ -21,6 +21,8 @@ import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
 import org.springframework.stereotype.Service;
 
 import java.net.URLDecoder;
+import java.util.Calendar;
+import java.util.Date;
 import java.util.List;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -133,15 +135,31 @@ public class CentralMemberService implements MemberService {
   }
 
   public Member reSendEmail(String email) throws OverflowException {
-//    Member member = this.memberDAO.findByEmail(email);
-//
-//    if (member != null && member.getMetaMemberStatus().getId().equals(MetaMemberStatus.Enum.NORMAL.getValue())) {
-//      throw new OverflowException("This email has already been verified.", new Throwable());
-//    }
-//
-//    List<EmailAuth> auths = this.emailAuthService.readByMember(member.getId());
-//
-    return null;
+    Member member = this.memberDAO.findByEmail(email);
+
+    if (member != null && member.getMetaMemberStatus().getId().equals(MetaMemberStatus.Enum.NORMAL.getValue())) {
+      throw new OverflowException("This email has already been verified.", new Throwable());
+    }
+
+    List<EmailAuth> auths = this.emailAuthService.readByMember(member.getId());
+
+    if (auths == null || auths.size() == 0) {
+      return this.emailAuthService.sendEmailByMember(member).getMember();
+    }
+
+    Calendar cal = Calendar.getInstance();
+
+    cal.setTime(auths.get(0).getCreateDate());
+    cal.add(Calendar.HOUR, 12);
+    Date futureDate = cal.getTime();
+
+    Date nowDate = new Date();
+
+    if (!nowDate.before(futureDate)) {
+      throw new OverflowException("The email authentication token is valid.", new Throwable());
+    }
+
+    return this.emailAuthService.sendEmailByMember(member).getMember();
   }
 
   public Member resetPassword(String token, String password) throws OverflowException {
diff --git a/src/test/java/com/loafle/overflow/central/module/email/service/EmailAuthServiceTest.java b/src/test/java/com/loafle/overflow/central/module/email/service/EmailAuthServiceTest.java
index a1f7856..f3a0186 100644
--- a/src/test/java/com/loafle/overflow/central/module/email/service/EmailAuthServiceTest.java
+++ b/src/test/java/com/loafle/overflow/central/module/email/service/EmailAuthServiceTest.java
@@ -5,6 +5,7 @@ import com.loafle.overflow.central.spring.AppConfigTest;
 import com.loafle.overflow.model.email.EmailAuth;
 import com.loafle.overflow.model.member.Member;
 import com.loafle.overflow.service.central.email.EmailAuthService;
+import com.loafle.overflow.service.central.member.MemberService;
 import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -14,6 +15,7 @@ import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
 
 import java.util.Calendar;
 import java.util.Date;
+import java.util.List;
 
 /**
  * Created by geek on 17. 6. 28.
@@ -27,6 +29,8 @@ public class EmailAuthServiceTest {
     @Autowired
     EmailAuthService emailAuthService;
 
+    @Autowired
+    MemberService memberService;
     @Test
     @Ignore
     public void TestMailSend() throws Exception {
@@ -57,4 +61,18 @@ public class EmailAuthServiceTest {
 //        System.out.println("dd = " + dd);
     }
 
-}
\ No newline at end of file
+    @Test
+    public void TestMemberIdOrderByDesc() throws Exception {
+
+      Member member = this.memberService.read((long)2);
+
+      for (int i = 0; i < 5; i++) {
+        this.emailAuthService.sendEmailByMember(member);
+      }
+
+      List<EmailAuth> auths = this.emailAuthService.readByMember((long)2);
+
+//      Assert.assertArrayEquals(auths, (short)5);
+      System.out.println(auths.size());
+    }
+}
diff --git a/src/test/resources/mail.properties b/src/test/resources/mail.properties
index 99f696d..0a01f91 100644
--- a/src/test/resources/mail.properties
+++ b/src/test/resources/mail.properties
@@ -2,7 +2,7 @@
 mail.host=smtp.worksmobile.com
 mail.port=465
 mail.username=geek@loafle.com
-mail.password=@loafle@5795
+mail.password=@cosmos@5795
 mail.protocol=smtps
 
 mail.properties.mail.smtp.auth=true