diff --git a/src/web/admin/admin_send_email.html b/src/web/admin/admin_send_email.html
index 1a18e5a..374b892 100644
--- a/src/web/admin/admin_send_email.html
+++ b/src/web/admin/admin_send_email.html
@@ -109,6 +109,53 @@
 			);
 		}
 
+		function sendMailUpdateMaestroName() {
+			var maestroNamePrev = "삼화초전전전";
+			var maestroName = "삼화초후후후";
+			var email = "jisangs@daum.net";
+
+			sendRequestServer(	//url, sendParams, onSuccess, onFail, isDebugMode);
+				// "./../server/mail/send_mail_bank_info.php",
+				"./../server/mail/send_mail_test.php",
+				"type=sendMailUpdateMaestroName" + "&maestro_name=" + maestroName + "&maestro_name_prev=" + maestroNamePrev + "&email=" + email,
+
+				function(jsonData) {
+					console.log(jsonData);
+					// showErrorMessage("마에스트로 계정이 정상적으로 등록되었습니다.", "success");
+					// loadMaestroList("");
+				},
+
+				function(errorMessage, errorCode) {
+					showErrorMessage(errorMessage, "error");
+				}
+
+			);
+		}
+
+		function sendMailUpdateMaestroEmail() {
+			var maestroName = "삼화초";
+			var emailPrev = "jisangs@daum.net";
+			var email = encodeURIComponent("support+chocomae.automail@jinaju.com");	// "jisangs@gmail.com";
+
+			sendRequestServer(	//url, sendParams, onSuccess, onFail, isDebugMode);
+				// "./../server/mail/send_mail_bank_info.php",
+				"./../server/mail/send_mail_test.php",
+				"type=sendMailUpdateMaestroEmail" + "&maestro_name=" + maestroName + "&email=" + email + "&email_prev=" + emailPrev,
+
+				function(jsonData) {
+					console.log(jsonData);
+					// showErrorMessage("마에스트로 계정이 정상적으로 등록되었습니다.", "success");
+					// loadMaestroList("");
+				},
+
+				function(errorMessage, errorCode) {
+					showErrorMessage(errorMessage, "error");
+				}
+
+			);
+		}
+
+
 		function getMaestroData() {
 			var maestroID = 1;
 			var maestroName = "삼화초";
@@ -162,6 +209,12 @@
 		<br/>
 		<br/>
 
+		<button type="button" class="btn btn-primary" onClick="sendMailUpdateMaestroName()">[ 마에 ] 정보 변경 - 아이디</button>
+
+		<button type="button" class="btn btn-primary" onClick="sendMailUpdateMaestroEmail()">[ 마에 ] 정보 변경 - 이메일</button>
+		<br/>
+		<br/>
+
 		<button type="button" class="btn btn-secondary" onClick="getMaestroData()">마에스트로 데이터 테스트</button>
 
 
diff --git a/src/web/module/maestro_section_register.html b/src/web/module/maestro_section_register.html
index 1ff4913..2941d19 100644
--- a/src/web/module/maestro_section_register.html
+++ b/src/web/module/maestro_section_register.html
@@ -164,7 +164,7 @@ function register_account() {
 
 	sendRequestServer(	//url, sendParams, onSuccess, onFail, isDebugMode);
 		"./../server/maestro/add_maestro.php",
-		"maestro_name=" + maestroName + "&password=" + password + "&email=" + email + "&account_type=" + selectedAccountTypeValue,
+		"maestro_name=" + maestroName + "&password=" + password + "&email=" + encodeURIComponent(email) + "&account_type=" + selectedAccountTypeValue,
 
 		(function(jsonData) {
 			isAvailableID = true;
diff --git a/src/web/module/maestro_setup.html b/src/web/module/maestro_setup.html
index fe2823f..9aeb88d 100644
--- a/src/web/module/maestro_setup.html
+++ b/src/web/module/maestro_setup.html
@@ -117,7 +117,7 @@ function changeMaestroInfo() {
 
 	sendRequestServer(	//url, sendParams, onSuccess, onFail, isDebugMode);
 		"./../server/maestro/update_maestro_info.php",
-		"maestro_id=" + maestroID + "&maestro_name=" + newMaestroIDName + "&email=" + newEmail,
+		"maestro_id=" + maestroID + "&maestro_name=" + newMaestroIDName + "&email=" + encodeURIComponent(newEmail),
 
 		(function(jsonData) {
 			alert(
diff --git a/src/web/server/maestro/update_maestro_info.php b/src/web/server/maestro/update_maestro_info.php
index 5cb1d18..a81d641 100644
--- a/src/web/server/maestro/update_maestro_info.php
+++ b/src/web/server/maestro/update_maestro_info.php
@@ -3,18 +3,64 @@ header("Content-Type: application/json");
 
 include "./../lib/send_reply_json.php";
 include "./../setup/connect_db.php";
+include "./../lib/maestro_account_info.php";
+include "./../lib/db_maestro.php";
+include "./../mail/mail_setting.php";
+include "./../mail/send_mail.php";
 
 $maestroID = $_POST["maestro_id"];
 $maestroName = $_POST["maestro_name"];
 $email = $_POST["email"];
 
 
+$info = get_maestro_info($maestroID);
+if($info === null) {
+	set_error_message("마에스트로 계정 정보를 가져올 수 없습니다.");
+	send_result_fail();
+	exit;
+}
+$maestro_name_prev = $info["name"];
+$email_prev = $info["email"];
+
+
 update_maestro_info($maestroID, $maestroName, $email);
 
+if($maestroName != $maestro_name_prev)
+	sendMailUpdateMaestroName($maestroName, $maestro_name_prev, $email);
+
+if($email != $email_prev)
+	sendMailUpdateMaestroEmail($maestroName, $email, $email_prev);
+
 send_result_success();
 exit;
 
 
+
+function get_maestro_info($maestroID) {
+	global $db_conn;
+
+	$query = "
+		SELECT Name, Email, AccountType, AvailableActivateDateTime, PlayerCount
+		FROM maestro
+		WHERE MaestroID = ?
+	";
+	$stmt = $db_conn->prepare($query);
+	$stmt->bind_param("s", $maestroID);
+	$stmt->execute();
+	$stmt->bind_result($name, $email, $accountType, $availableActivateDateTime, $playerCount);
+	// while($stmt->fetch())
+	$stmt->fetch();
+	$stmt->close();
+
+	$info["name"] = $name;
+	$info["email"] = $email;
+	$info["accountType"] = $accountType;
+	$info["availableActivateDateTime"] = $availableActivateDateTime;
+	$info["playerCount"] = $playerCount;
+
+	return $info;
+}
+
 function update_maestro_info($maestroID, $maestroName, $email) {
 	global $db_conn;
 
diff --git a/src/web/server/mail/send_mail.php b/src/web/server/mail/send_mail.php
index a999984..c6f568e 100644
--- a/src/web/server/mail/send_mail.php
+++ b/src/web/server/mail/send_mail.php
@@ -103,6 +103,44 @@ function sendMailUpgradeDone($maestro_name, $maestro_email, $account_type, $upgr
 	sendEmail($postParamData);
 }
 
+function sendMailUpdateMaestroName($maestro_name, $maestro_name_prev, $maestro_email) {
+	$postParamData = makeDefaultPostParamData($maestro_name, $maestro_email);
+
+	$postParamData["templateSid"] = "161";
+	$postParamData["parameters"] = array(
+		"maestro_name_prev"	=> $maestro_name_prev,
+		"maestro_name"		=> $maestro_name,
+	);
+
+	sendEmail($postParamData);
+}
+
+function sendMailUpdateMaestroEmail($maestro_name, $maestro_email, $maestro_email_prev) {
+	// send to new email
+	$postParamData = makeDefaultPostParamData($maestro_name, $maestro_email);
+
+	$postParamData["templateSid"] = "137";
+	$postParamData["parameters"] = array(
+		"maestro_email_prev"	=> $maestro_email_prev,
+		"maestro_email"			=> $maestro_email,
+	);
+
+	sendEmail($postParamData);
+
+
+	// send to previous email
+	$postParamDataPrev = makeDefaultPostParamData($maestro_name, $maestro_email_prev);
+
+	$postParamDataPrev["templateSid"] = "137";
+	$postParamDataPrev["parameters"] = array(
+		"maestro_email_prev"	=> $maestro_email_prev,
+		"maestro_email"			=> $maestro_email,
+	);
+
+	sendEmail($postParamDataPrev);
+}
+
+
 function sendEmail($postParamData) {
 	global $host_name_url, $request_url, $access_key,  $secret_key,  $api_key,  $method,  $request_id;
 	global $sender_name, $sender_address;
@@ -235,14 +273,18 @@ function cUrl($postParam, $timestamp, $signature) {
 		curl_close ($ch);
 		if($status_code == 200) {
 			set_data("sendmail_respond", $response);
+			set_data("sendmail_postParam", $postParam);
 		} else if($status_code == 201) {
 			set_data("sendmail_succeed", $response);
+			set_data("sendmail_postParam", $postParam);
 		} else {
 			set_data("sendmail_error", $response);
+			set_data("sendmail_error_postParam", $postParam);
 		}
 
 	} catch(Exception $E) {
 		set_data("sendmail_error", $E->lastResponse);
+		set_data("sendmail_error_postParam", $postParam);
 	}
 }
 
diff --git a/src/web/server/mail/send_mail_test.php b/src/web/server/mail/send_mail_test.php
index 488be41..e950018 100644
--- a/src/web/server/mail/send_mail_test.php
+++ b/src/web/server/mail/send_mail_test.php
@@ -15,25 +15,22 @@ $password = $_POST["password"];
 $maestro_email = $_POST["email"];
 $account_type = $_POST["account_type"];
 $upgrade_account_type = $_POST["upgrade_account_type"];
+$maestro_name_prev = $_POST["maestro_name_prev"];
+$maestro_email_prev = $_POST["email_prev"];
 
 
 if($type == "sendMailRegisterBankInfo") {
-
 	sendMailRegisterBankInfo($maestro_name, $maestro_email, $account_type);
-
 } else if($type == "sendMailRegistered") {
-
 	sendMailRegisterDone($maestro_name, $maestro_email);
-
 } else if($type == "sendMailUpgradeBankInfo") {
-
 	sendMailUpgradeBankInfo($maestro_name, $maestro_email, $account_type, $upgrade_account_type);
-
-
 } else if($type == "sendMailUpgradeDone") {
-
 	sendMailUpgradeDone($maestro_name, $maestro_email, $account_type, $upgrade_account_type);
-
+} else if($type == "sendMailUpdateMaestroName") {
+	sendMailUpdateMaestroName($maestro_name, $maestro_name_prev, $maestro_email);
+} else if($type == "sendMailUpdateMaestroEmail") {
+	sendMailUpdateMaestroEmail($maestro_name, $maestro_email, $maestro_email_prev);
 } else if($type == "get_maestro_data") {
 	// maestro data
 	$maestro_data = get_maestro_data($maestro_id);