diff --git a/src/main/java/kr/co/uplus/ez/api/sendNumMgt/SendNumMgtMapper.java b/src/main/java/kr/co/uplus/ez/api/sendNumMgt/SendNumMgtMapper.java
index 5303a6a..e785e8d 100644
--- a/src/main/java/kr/co/uplus/ez/api/sendNumMgt/SendNumMgtMapper.java
+++ b/src/main/java/kr/co/uplus/ez/api/sendNumMgt/SendNumMgtMapper.java
@@ -60,4 +60,6 @@ interface SendNumMgtMapper {
 	InsertNumberFile selectDownload(InsertNumberFile insertNumberFile);
 
 	List<InsertNumber> selectSndrnoListAll(InsertNumberReqDto insertNumberReqDto);
+	
+	String selectApiAuthToken(String apiApplicationId);
 }
diff --git a/src/main/java/kr/co/uplus/ez/api/sendNumMgt/SendNumMgtService.java b/src/main/java/kr/co/uplus/ez/api/sendNumMgt/SendNumMgtService.java
index 0c2d358..7c84620 100644
--- a/src/main/java/kr/co/uplus/ez/api/sendNumMgt/SendNumMgtService.java
+++ b/src/main/java/kr/co/uplus/ez/api/sendNumMgt/SendNumMgtService.java
@@ -8,7 +8,9 @@ import java.io.InputStream;
 import java.io.OutputStream;
 import java.util.ArrayList;
 import java.util.Date;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
@@ -16,6 +18,8 @@ import javax.servlet.http.HttpServletResponse;
 import org.apache.commons.io.FilenameUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.mybatis.spring.SqlSessionTemplate;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.beans.factory.annotation.Value;
@@ -26,6 +30,7 @@ import org.springframework.transaction.annotation.Transactional;
 import org.springframework.web.multipart.MultipartFile;
 import org.springframework.web.multipart.MultipartHttpServletRequest;
 
+import kr.co.uplus.ez.api.custMgt.CustMgtService;
 import kr.co.uplus.ez.api.sendNumMgt.dto.DeleteNumberReqDto;
 import kr.co.uplus.ez.api.sendNumMgt.dto.DeleteNumberResDto;
 import kr.co.uplus.ez.api.sendNumMgt.dto.DetailNumber;
@@ -60,6 +65,7 @@ import kr.co.uplus.ez.api.sendNumMgt.dto.SendNumberListResDto;
 import kr.co.uplus.ez.api.sendNumMgt.dto.UpdateApprReqDto;
 import kr.co.uplus.ez.api.sendNumMgt.dto.UpdateApprResDto;
 import kr.co.uplus.ez.api.sendNumMgt.dto.UpdateApprSendNumber;
+import kr.co.uplus.ez.common.components.HubeasyApiComponents;
 import kr.co.uplus.ez.common.data.ApiResponseCode;
 import kr.co.uplus.ez.common.data.Const;
 import kr.co.uplus.ez.common.data.Paging;
@@ -69,6 +75,8 @@ import kr.co.uplus.ez.common.utils.FileUtil;
 
 @Service
 public class SendNumMgtService {
+	
+	private static final Logger logger = LoggerFactory.getLogger(CustMgtService.class);
 
 	@Autowired
 	@Qualifier("sqlSessionTemplateDb1")
@@ -77,9 +85,24 @@ public class SendNumMgtService {
 	@Autowired
 	@Qualifier("sqlSessionTemplateDb2")
 	private SqlSessionTemplate sqlSessionSlave;
+	
+	@Autowired
+    private HubeasyApiComponents hubeasyApi;
 
 	@Value("${file-resource.info.sendNumber.path:/efs/admin/sendNumber/}")
 	private String sendNumUploadPath;
+	
+    @Value("${msghubez.applicationId:EZ_ADMIN}")
+    private String apiApplicationId;
+    
+    @Value("${mail.senrNoRejTempleteCode:E0007}")
+    private String templeteCode;
+    
+    @Value("${msghubez.homepage-url:https://mhez.uplus.co.kr}")
+    private String mailTempleteHomeUrl;
+    
+    @Value("${mail.from:msghubez@lguplus.co.kr}")
+    private String fromEmail;
 
 	private static int BUFFERSIZE = 1024;
 	/**
@@ -597,7 +620,10 @@ public class SendNumMgtService {
 		Object principal = SecurityContextHolder.getContext().getAuthentication().getPrincipal();
 		UserDetails userDetails = (UserDetails) principal;
 		String regId = userDetails.getUsername();
-
+		Map<Object, Object> mailReqMap = new HashMap<Object,Object>();
+		
+		List<String> sndrNoList = new ArrayList<String>();
+		
 		// 발신번호 메모 업데이트. upddateSndrnoReg
 		int totalCnt = updateApprReqDto.getList().size();
 		int apvCnt = 0;
@@ -605,14 +631,62 @@ public class SendNumMgtService {
 		for(UpdateApprSendNumber updateApprSendNumber: updateApprReqDto.getList()){
 			if(StringUtils.equals(Const.SNDRNO_STTUS_CD_COMPLETED, updateApprSendNumber.getSttusCd())){
 				apvCnt++;
+				logger.info("발신번호 승인, 건수 ={}",apvCnt);
 				updateApprSendNumber.setUseYn(Const.COMM_YES);	// 사용여부 : 승인완료 시 자동으로 Y 값으로 되며 승인대기, 반려, 관리자 변경 값은 N으로 표기
 			}else if(StringUtils.equals(Const.SNDRNO_STTUS_CD_REJECT, updateApprSendNumber.getSttusCd())){
 				rejtCnt++;
+				logger.info("발신번호 반려, 건수 ={}",rejtCnt);
 				updateApprSendNumber.setUseYn(Const.COMM_NO);	// 사용여부 : 승인완료 시 자동으로 Y 값으로 되며 승인대기, 반려, 관리자 변경 값은 N으로 표기
+				logger.info("************************반려 값 오는지 확인 ********************");
+				logger.info("발신번호={}",updateApprSendNumber.getSndrno());
+				// ** 발신번호 반려 시에는 사용자에게 반려 메일 전송  **
+				//1. for문 안에서는 반려 발신번호 리스트에 셋팅
+				sndrNoList.add(updateApprSendNumber.getSndrno());
+
 			}
 			updateApprSendNumber.setAdminId(regId);
 			sendNumMgtMapper.updateSndrno(updateApprSendNumber);
 		}
+		
+		//2. 반려 발신번호 리스트에 값이 있을 경우 메일을 보냄
+		if(sndrNoList.size()>0) {
+			//try catch 처리하기
+			try {
+				String testEmail = "lmh3294@naver.com";
+				Map<Object, Object> mailResultMap = new HashMap<Object, Object>();
+				
+				// API authToken 조회
+				String apiAuthToken = sendNumMgtMapper.selectApiAuthToken(apiApplicationId);
+				
+				//3. 메일에 담을 내용 셋팅
+				mailReqMap.put("applicationId", apiApplicationId);
+				mailReqMap.put("apiAuthToken", apiAuthToken);
+				mailReqMap.put("rejectListSndrNo", sndrNoList);
+				mailReqMap.put("memo", updateApprReqDto.getMemo());
+				//이메일 수신자 가져오는 쿼리
+				mailReqMap.put("toEmail", testEmail);
+				mailReqMap.put("fromEmail", fromEmail);
+				mailReqMap.put("templeteCode", templeteCode);
+				mailReqMap.put("homeUrl", mailTempleteHomeUrl);
+				
+				
+				logger.debug("############## [Email Send Start] ###############");
+	            logger.debug("[Email Send Request - applicationId : {}]", mailReqMap.get("applicationId"));
+	            logger.debug("[Email Send Request - authToken : {}]", mailReqMap.get("authToken"));
+	            logger.debug("[Email Send Request - userId : {}]", mailReqMap.get("rejectListSndrNo"));
+	            logger.debug("[Email Send Request - tmpPwd : {}]", mailReqMap.get("memo"));
+	            logger.debug("[Email Send Request - toEmail : {}]", mailReqMap.get("toEmail"));
+	            logger.debug("[Email Send Request - fromEmail : {}]", mailReqMap.get("fromEmail"));
+	            logger.debug("[Email Send Request - templeteCode : {}]", mailReqMap.get("templeteCode"));
+	            logger.debug("[Email Send Request - homeUrl : {}]", mailReqMap.get("homeUrl"));
+				
+				mailResultMap = hubeasyApi.sendTemplateMailApi(mailReqMap);
+				
+			} catch (Exception e) {
+				// TODO: handle exception
+			}
+		}
+		
 
 		updateApprReqDto.setApvCnt(apvCnt);
 		updateApprReqDto.setRejtCnt(rejtCnt);
diff --git a/src/main/java/kr/co/uplus/ez/common/components/HubeasyApiComponents.java b/src/main/java/kr/co/uplus/ez/common/components/HubeasyApiComponents.java
index c264693..ca29123 100644
--- a/src/main/java/kr/co/uplus/ez/common/components/HubeasyApiComponents.java
+++ b/src/main/java/kr/co/uplus/ez/common/components/HubeasyApiComponents.java
@@ -13,6 +13,8 @@ import org.springframework.http.client.MultipartBodyBuilder;
 import org.springframework.stereotype.Component;
 import org.springframework.util.MultiValueMap;
 
+import kr.co.uplus.ez.common.data.Const;
+
 @Component
 public class HubeasyApiComponents {
 
@@ -37,9 +39,18 @@ public class HubeasyApiComponents {
 		String applicationId = (String) apiReqMap.get("applicationId");
 		String authToken = (String) apiReqMap.get("authToken");
 
-		jsonObject.put("userId", apiReqMap.get("userId"));
-		jsonObject.put("tmpPwd", apiReqMap.get("tmpPwd"));
-		jsonObject.put("homeUrl", apiReqMap.get("homeUrl"));
+		if(Const.TMPL_CODE_005.equals(apiReqMap.get("templeteCode"))) {
+			
+			jsonObject.put("userId", apiReqMap.get("userId"));
+			jsonObject.put("tmpPwd", apiReqMap.get("tmpPwd"));
+			jsonObject.put("homeUrl", apiReqMap.get("homeUrl"));
+			
+		} else if(Const.TMPL_CODE_007.equals(apiResultMap.get("templeteCode"))) {
+			
+			jsonObject.put("rejectListSndrNo", apiReqMap.get("rejectListSndrNo"));
+			jsonObject.put("rejectHtml", apiReqMap.get("rejectHtml"));
+		}
+		
 
 		String jsonString = jsonObject.toString();
 
diff --git a/src/main/java/kr/co/uplus/ez/common/data/Const.java b/src/main/java/kr/co/uplus/ez/common/data/Const.java
index e9e2ef6..036650e 100644
--- a/src/main/java/kr/co/uplus/ez/common/data/Const.java
+++ b/src/main/java/kr/co/uplus/ez/common/data/Const.java
@@ -153,4 +153,8 @@ public class Const {
 	public static final String BATCH_RESULT_SUCCESS = "S";
 	public static final String BATCH_RESULT_FAIL = "F";
 	
+	
+	public static final String TMPL_CODE_005	= "E0005"; //U+메시지허브이지 이메일 인증
+	public static final String TMPL_CODE_007	= "E0007"; //발신번호 반려 메일
+	
 }
diff --git a/src/main/resources/application-stg.yml b/src/main/resources/application-stg.yml
index 9e74212..c9c249d 100644
--- a/src/main/resources/application-stg.yml
+++ b/src/main/resources/application-stg.yml
@@ -44,6 +44,7 @@ authentication:
 mail:
   from: msghubez@lguplus.co.kr
   templeteCode: E0005
+  senrNoRejTempleteCode: E0007
 
 msghubez:
   homepage-url: https://mhez-qa.uplus.co.kr
diff --git a/src/main/resources/mapper/mysql/sendNumMgt/sendNumMgt-mapper.xml b/src/main/resources/mapper/mysql/sendNumMgt/sendNumMgt-mapper.xml
index 7db9044..2fc0d23 100644
--- a/src/main/resources/mapper/mysql/sendNumMgt/sendNumMgt-mapper.xml
+++ b/src/main/resources/mapper/mysql/sendNumMgt/sendNumMgt-mapper.xml
@@ -679,5 +679,12 @@
 		 WHERE REG_REQ_NO = #{regReqNo}
 		 and DOC_NO = #{docNo}
 	</select>
+	
+	<select id="selectApiAuthToken" parameterType="String" resultType="String">
+		/* sendNumMgt-mapper.xml(selectApiAuthToken) */
+		SELECT AUTHTKN
+		FROM hubez_common.EZ_IFSYS_INFO
+		WHERE SYS_ID = #{apiApplicationId}
+	</select>
 
 </mapper>
\ No newline at end of file