diff --git a/build b/build
index 7c6ba0f..2ebc651 100644
--- a/build
+++ b/build
@@ -1 +1 @@
-55
\ No newline at end of file
+56
\ No newline at end of file
diff --git a/src/MicroService.h b/src/MicroService.h
index 1dbf62a..f99afda 100644
--- a/src/MicroService.h
+++ b/src/MicroService.h
@@ -39,6 +39,8 @@ namespace OpenWifi {
     static const std::string uSERVICE_TOPOLOGY{ "owtopo"};
     static const std::string uSERVICE_PROVISIONING{ "owprov"};
     static const std::string uSERVICE_OWLS{ "owls"};
+    static const std::string uSERVICE_SUBCRIBER{ "owsub"};
+    static const std::string uSERVICE_INSTALLER{ "owinst"};
 
 	class MyErrorHandler : public Poco::ErrorHandler {
 	  public:
diff --git a/src/RESTAPI_user_handler.cpp b/src/RESTAPI_user_handler.cpp
index 80dbdf4..5059a39 100644
--- a/src/RESTAPI_user_handler.cpp
+++ b/src/RESTAPI_user_handler.cpp
@@ -17,8 +17,12 @@ namespace OpenWifi {
             return BadRequest(RESTAPI::Errors::MissingUserID);
         }
 
+        Poco::toLowerInPlace(Id);
+        std::string Arg;
         SecurityObjects::UserInfo   UInfo;
-        if(!Storage()->GetUserById(Id,UInfo)) {
+        if(HasParameter("byEmail",Arg) && Arg=="true" && !Storage()->GetUserByEmail(Id,UInfo)) {
+            return NotFound();
+        } else if(!Storage()->GetUserById(Id,UInfo)) {
             return NotFound();
         }
         Poco::JSON::Object  UserInfoObject;