diff --git a/conf/app.ini b/conf/app.ini
index 18ad9c3d215d2..1814c7516be28 100644
--- a/conf/app.ini
+++ b/conf/app.ini
@@ -336,7 +336,7 @@ HOST =
 ; Mailer user name and password
 USER =
 PASSWD =
-; Receivers, can be one or more, e.g. ["1@example.com","2@example.com"]
+; Receivers, can be one or more, e.g. 1@example.com,2@example.com
 RECEIVERS =
 
 ; For "database" mode only
diff --git a/modules/setting/setting.go b/modules/setting/setting.go
index d78b22c484897..0e45c6b654aec 100644
--- a/modules/setting/setting.go
+++ b/modules/setting/setting.go
@@ -685,11 +685,11 @@ func newLogService() {
 				sec.Key("PROTOCOL").In("tcp", []string{"tcp", "unix", "udp"}),
 				sec.Key("ADDR").MustString(":7020"))
 		case "smtp":
-			LogConfigs[i] = fmt.Sprintf(`{"level":%s,"username":"%s","password":"%s","host":"%s","sendTos":"%s","subject":"%s"}`, level,
+			LogConfigs[i] = fmt.Sprintf(`{"level":%s,"username":"%s","password":"%s","host":"%s","sendTos":["%s"],"subject":"%s"}`, level,
 				sec.Key("USER").MustString("example@example.com"),
 				sec.Key("PASSWD").MustString("******"),
 				sec.Key("HOST").MustString("127.0.0.1:25"),
-				sec.Key("RECEIVERS").MustString("[]"),
+				strings.Replace(sec.Key("RECEIVERS").MustString("example@example.com"), ",", "\",\"", -1),
 				sec.Key("SUBJECT").MustString("Diagnostic message from serve"))
 		case "database":
 			LogConfigs[i] = fmt.Sprintf(`{"level":%s,"driver":"%s","conn":"%s"}`, level,