diff --git a/Server/Scheduler/SessionScheduler.cs b/Server/Scheduler/SessionScheduler.cs
index aa6f581..c4d692a 100644
--- a/Server/Scheduler/SessionScheduler.cs
+++ b/Server/Scheduler/SessionScheduler.cs
@@ -1,4 +1,6 @@
-using Server.System;
+using Server.SQL;
+using Server.System;
+using System.Runtime.CompilerServices;
 
 namespace Server.Scheduler
 {
@@ -12,12 +14,66 @@ namespace Server.Scheduler
 
             for (int n = users.Count - 1; n >= 0; n--)
             {
-                if ((now - (DateTime)Statics.redis.GetHash("end_login", "UserInfo", users[n])).TotalMinutes >= 10)
+                if ((now - DateTime.Parse(Statics.redis.GetHash("end_login", "UserInfo", users[n]))).TotalMinutes >= 10)
                 {
                     Statics.redis.RemoveList(n, users[n], "LoginUser");
                     Statics.redis.RemoveKey("UserSession", users[n]);
                 }
             }
         }
+
+        //신규 로그인
+        public static void addSession(User user)
+        {
+            //기존 세션 확인
+            string loginUUID = Guid.NewGuid().ToString();
+            Dictionary<string, string> users = Statics.redis.GetAllHash("LoginUsers");
+
+            foreach(var item in users)
+            {
+                if(int.Parse(item.Value) == user.id)
+                {
+                    Statics.redis.RemoveHash(item.Key);
+                    Statics.redis.SetHash(loginUUID, user.id.ToString(), "LoginUsers");
+                    updateSession(loginUUID);
+                    return;
+                }
+            }
+
+            Statics.redis.SetHash(loginUUID, user.id.ToString(), "LoginUsers");
+            Dictionary<string, string> userInfo = new Dictionary<string, string>();
+            userInfo.Add("id", user.id.ToString());
+            userInfo.Add("uuid", user.uuid);
+            userInfo.Add("mail", user.mail);
+            userInfo.Add("nickname ", user.nickname);
+            userInfo.Add("gold ", user.gold.ToString());
+            userInfo.Add("free_cash", user.free_cash.ToString());
+            userInfo.Add("pay_cash", user.pay_cash.ToString());
+            userInfo.Add("end_login", DateTime.Now.ToString());
+            Statics.redis.SetHash(userInfo, "UserInfo", user.id.ToString());
+        }
+
+        //세션 업데이트
+        public static void updateSession(string UUID)
+        {
+            int id = int.Parse(Statics.redis.GetHash(UUID, "LoginUsers"));
+            Statics.redis.SetHash("end_login", DateTime.Now.ToString(), "UserInfo", id.ToString());
+        }
+
+        public static User GetUser(string UUID)
+        {
+            User user = new User();
+            int id = int.Parse(Statics.redis.GetHash(UUID, "LoginUsers"));
+            Dictionary<string, string> userHash= Statics.redis.GetAllHash("UserInfo", id.ToString());
+            user.id = int.Parse(userHash["id"]);
+            user.uuid = userHash["uuid"];
+            user.mail = userHash["mail"];
+            user.nickname = userHash["nickname"];
+            user.gold = int.Parse(userHash["gold"]);
+            user.free_cash = int.Parse(userHash["free_cash"]);
+            user.pay_cash = int.Parse(userHash["pay_cash"]);
+            Statics.redis.SetHash("end_login", DateTime.Now.ToString(), "UserInfo", id.ToString());
+            return user;
+        }
     }
 }
diff --git a/Server/Service/BuyShopItem.cs b/Server/Service/BuyShopItem.cs
index 65776ec..dd35f9d 100644
--- a/Server/Service/BuyShopItem.cs
+++ b/Server/Service/BuyShopItem.cs
@@ -18,11 +18,11 @@ namespace Server.Service
         {
             Statics.userSQL.Update(req.user);
 
-            Dictionary<string, object> saveUser = new Dictionary<string, object>();
+            Dictionary<string, string> saveUser = new Dictionary<string, string>();
             saveUser.Add("nickname", req.user.nickname);
-            saveUser.Add("gold", req.user.gold);
-            saveUser.Add("free_cash", req.user.free_cash);
-            saveUser.Add("pay_cash", req.user.pay_cash);
+            saveUser.Add("gold", req.user.gold.ToString());
+            saveUser.Add("free_cash", req.user.free_cash.ToString());
+            saveUser.Add("pay_cash", req.user.pay_cash.ToString());
             Statics.redis.SetHash(saveUser, "UserInfo", req.uuid);
 
 
diff --git a/Server/Service/Login.cs b/Server/Service/Login.cs
index 5dff4b9..f4d8ba1 100644
--- a/Server/Service/Login.cs
+++ b/Server/Service/Login.cs
@@ -2,8 +2,6 @@
 using Newtonsoft.Json;
 using Server.SQL;
 using Server.Manager;
-using Microsoft.AspNetCore.DataProtection.KeyManagement;
-using System.Collections.Generic;
 using Server.SQL.Excel;
 using static Server.Scheduler.SessionScheduler;
 
@@ -96,24 +94,12 @@ namespace Server.Service
                 deckInfoList = new List<DeckInfo> { deckInfo };
                 #endregion
             }
+
+            //세션 추가
+            addSession(user);
             #endregion
 
-            #region 세션등록
-            //TODO 기존 중복세션에 대한 처리도 필요
-            //TODO 모든 세션 처리를 세션 스케줄러에서 처리가 가능하도록 수정할것
-            string loginUUID = Guid.NewGuid().ToString();
-            Statics.redis.SetList(loginUUID, "LoginUsers");
-            Dictionary<string, object> userInfo = new Dictionary<string, object>();
-            userInfo.Add("id", user.id);
-            userInfo.Add("uuid", user.uuid);
-            userInfo.Add("mail", user.mail);
-            userInfo.Add("nickname ", user.nickname);
-            userInfo.Add("gold ", user.gold);
-            userInfo.Add("free_cash", user.free_cash);
-            userInfo.Add("pay_cash", user.pay_cash);
-            userInfo.Add("end_login", DateTime.Now);
-            Statics.redis.SetHash(userInfo, "UserInfo", loginUUID);
-            #endregion
+
 
             #region 상점 세팅
             //리셋 상점
diff --git a/Server/Service/NicknameChange.cs b/Server/Service/NicknameChange.cs
index e4542fb..12d3782 100644
--- a/Server/Service/NicknameChange.cs
+++ b/Server/Service/NicknameChange.cs
@@ -12,11 +12,11 @@ namespace Server.Service
         {
             Statics.userSQL.Update(req.user);
 
-            Dictionary<string, object> saveUser = new Dictionary<string, object>();
+            Dictionary<string, string> saveUser = new Dictionary<string, string>();
             saveUser.Add("nickname", req.user.nickname);
-            saveUser.Add("gold", req.user.gold);
-            saveUser.Add("free_cash", req.user.free_cash);
-            saveUser.Add("pay_cash", req.user.pay_cash);
+            saveUser.Add("gold", req.user.gold.ToString());
+            saveUser.Add("free_cash", req.user.free_cash.ToString());
+            saveUser.Add("pay_cash", req.user.pay_cash.ToString());
             Statics.redis.SetHash(saveUser, "UserInfo", req.uuid);
         }
 
@@ -30,8 +30,8 @@ namespace Server.Service
 
             //만약 시스템 설정과 같은 닉네임이 온다면 중복 처리
             if (newNickname == defaultNick)
-            {       
-                   throw new RuntimeException("Duplicate nickname", Error.ErrorData);
+            {
+                throw new RuntimeException("Duplicate nickname", Error.ErrorData);
             }
 
             //닉네임 체크
@@ -94,4 +94,4 @@ namespace Server.Service
         public string nickname;
         public uint cash;
     }
-}
+}
\ No newline at end of file
diff --git a/Server/Service/UseItem.cs b/Server/Service/UseItem.cs
index d9c90ee..2a8a8f6 100644
--- a/Server/Service/UseItem.cs
+++ b/Server/Service/UseItem.cs
@@ -1,5 +1,6 @@
 using Server.System;
 using Newtonsoft.Json;
+using Server.SQL;
 
 namespace Server.Service
 {
@@ -8,6 +9,7 @@ namespace Server.Service
         private UseItemReq req;
         public override string Process()
         {
+            User user = req.user;
             return makeResp();
         }
 
diff --git a/Server/System/Abstract.cs b/Server/System/Abstract.cs
index 2ff8dc2..95268a6 100644
--- a/Server/System/Abstract.cs
+++ b/Server/System/Abstract.cs
@@ -1,6 +1,6 @@
 using Newtonsoft.Json;
+using Server.Scheduler;
 using Server.SQL;
-using static Server.Scheduler.SessionScheduler;
 
 namespace Server.System
 {
@@ -39,15 +39,7 @@ namespace Server.System
         {
             try
             {
-                Dictionary<string, object> hash = Statics.redis.GetAllHash("UserInfo", uuid);
-                user.id = (int)hash["id"];
-                user.uuid = (string)hash["uuid"];
-                user.mail = (string)hash["mail"];
-                user.nickname = (string)hash["nickname"];
-                user.gold = (int)hash["gold"];
-                user.free_cash = (int)hash["free_cash"];
-                user.pay_cash = (int)hash["pay_cash"];
-                Statics.redis.SetHash("end_login", DateTime.Now, "UserInfo", uuid);
+                user = SessionScheduler.GetUser(uuid);
                 return true;
             }
             catch (Exception e)
diff --git a/Server/System/Enums.cs b/Server/System/Enums.cs
index afa924d..4953db3 100644
--- a/Server/System/Enums.cs
+++ b/Server/System/Enums.cs
@@ -7,17 +7,20 @@
     //100~199 로그인이나 시스템과 연관된 프로토콜
     Downlode = 100,//기획 데이터 다운로드
     Login = 101,//로그인 유저정보 요청
+    Synchronization = 102,//우편함 정보, 실시간 업데이트 등 일정시간마다 불러와야 하는 프로토콜 (TODO)
 
     //200~299 유저 장비 관련 혹은 유닛관련 시스템 관리 프로토콜
     EquipChange = 200,//장비 변경
     DeckChange = 201,//덱 유닛 변경
     NicknameChange = 202,//닉네임 변경
+    OpenMail = 210,//메일 오픈(TODO)
+    GetMail = 211,//메일 첨부 아이탬 획득(TODO)
 
     //300~399 상점 관련 프로토콜
     BuyShopItem = 300,//상점 아이템 구매
     BuyShopGacha = 301,//가챠 아이탬 사용(보류)
-    UseItem = 302,//소모품 사용(보류)
-    BuyItem = 303,//아이탬 판매(보류)
+    UseItem = 302,//소모품 사용(TODO)
+    BuyItem = 303,//아이탬 판매(TODO)
 
     //400~499 스토리 관련 프로토콜
     UpdateStory = 400,//유저의 스토리 진행 상황 저장(작업 중)
diff --git a/Server/System/Redis.cs b/Server/System/Redis.cs
index 66ce44b..ed7f7c2 100644
--- a/Server/System/Redis.cs
+++ b/Server/System/Redis.cs
@@ -199,7 +199,7 @@ namespace Server.System
             return result;
         }
 
-        public void SetHash(string field, object value, params string[] keys)
+        public void SetHash(string field, string value, params string[] keys)
         {
             if (local)
             {
@@ -209,9 +209,9 @@ namespace Server.System
                 {
                     Dictionary<string, string> userHash = hashType[KeySet(keys)];
                     if (userHash.ContainsKey(field))
-                        userHash.Add(field, JsonConvert.SerializeObject(value));
+                        userHash.Add(field, value);
                     else
-                        userHash[field] = JsonConvert.SerializeObject(value);
+                        userHash[field] = value;
                 }
             }
             else
@@ -220,20 +220,20 @@ namespace Server.System
             }
         }
 
-        public void SetHash(Dictionary<string, object> hash, params string[] keys)
+        public void SetHash(Dictionary<string, string> hash, params string[] keys)
         {
             foreach (var item in hash)
                 SetHash(item.Key, item.Value, keys);
         }
 
-        public Dictionary<string, object> GetAllHash(params string[] keys)
+        public Dictionary<string, string> GetAllHash(params string[] keys)
         {
-            Dictionary<string, object> hash = new Dictionary<string, object>();
+            Dictionary<string, string> hash = new Dictionary<string, string>();
             if (local)
             {
                 Dictionary<string, string> hashs = new Dictionary<string, string>(hashType[KeySet(keys)]);
                 foreach (var entry in hashs)
-                    hash.Add(entry.Key, JsonConvert.DeserializeObject(entry.Value));
+                    hash.Add(entry.Key, entry.Value);
             }
             else
             {
@@ -244,7 +244,7 @@ namespace Server.System
             return hash;
         }
 
-        public object GetHash(string field ,params string[] keys)
+        public string GetHash(string field ,params string[] keys)
         {
             if (local)
             {
@@ -255,6 +255,14 @@ namespace Server.System
                 return db.HashGet(KeySet(keys), field);
         }
 
+        public void RemoveHash(string field, params string[] keys)
+        {
+            if (local)
+                hashType[KeySet(keys)].Remove(field);
+            else
+                db.HashDelete(KeySet(keys), field);
+        }
+
         public void RemoveKey(params string[] keys)
         {
             if (local)