diff --git a/FunGame.Core/Api/Transmittal/MailSender.cs b/FunGame.Core/Api/Transmittal/MailSender.cs
new file mode 100644
index 0000000..bf9c1a1
--- /dev/null
+++ b/FunGame.Core/Api/Transmittal/MailSender.cs
@@ -0,0 +1,28 @@
+using Milimoe.FunGame.Core.Interface.Base;
+using Milimoe.FunGame.Core.Library.Common.Network;
+using Milimoe.FunGame.Core.Library.Constant;
+using Milimoe.FunGame.Core.Library.Server;
+using Milimoe.FunGame.Core.Service;
+
+namespace Milimoe.FunGame.Core.Api.Transmittal
+{
+    public class MailSender
+    {
+        public SmtpClientInfo SmtpClientInfo => _SmtpClientInfo;
+        public MailSendResult LastestResult => _LastestResult;
+
+        private SmtpClientInfo _SmtpClientInfo;
+        private MailSendResult _LastestResult = MailSendResult.NotSend;
+
+        public MailSender(string SenderMailAddress, string SenderName, string SenderPassword, string Host, int Port, bool OpenSSL)
+        {
+            _SmtpClientInfo = new SmtpClientInfo(SenderMailAddress, SenderName, SenderPassword, Host, Port, OpenSSL);
+        }
+
+        public MailSendResult Send(MailObject Mail)
+        {
+            _LastestResult = MailManager.Send(this, Mail);
+            return _LastestResult;
+        }
+    }
+}
diff --git a/FunGame.Core/Api/Data/SQLHelper.cs b/FunGame.Core/Api/Transmittal/SQLHelper.cs
similarity index 100%
rename from FunGame.Core/Api/Data/SQLHelper.cs
rename to FunGame.Core/Api/Transmittal/SQLHelper.cs
diff --git a/FunGame.Core/Api/Utility/General.cs b/FunGame.Core/Api/Utility/General.cs
index 56dedb9..581f5cb 100644
--- a/FunGame.Core/Api/Utility/General.cs
+++ b/FunGame.Core/Api/Utility/General.cs
@@ -255,4 +255,109 @@ namespace Milimoe.FunGame.Core.Api.Utility
     }
 
     #endregion
+
+    #region 验证服务
+
+    public class Verification
+    {
+        /// <summary>
+        /// 生成验证码
+        /// </summary>
+        /// <param name="type">类型</param>
+        /// <param name="length">长度</param>
+        /// <returns></returns>
+        public static string CreateVerifyCode(VerifyCodeType type, int length)
+        {
+            return type switch
+            {
+                VerifyCodeType.MixVerifyCode => MixVerifyCode(length),
+                VerifyCodeType.LetterVerifyCode => LetterVerifyCode(length),
+                _ => NumberVerifyCode(length),
+            };
+        }
+
+        /// <summary>
+        /// 数字验证码
+        /// </summary>
+        /// <param name="length"></param>
+        /// <returns></returns>
+        private static string NumberVerifyCode(int length)
+        {
+            int[] RandMembers = new int[length];
+            int[] GetNumbers = new int[length];
+            string VerifyCode = "";
+            //生成起始序列值  
+            int seekSeek = unchecked((int)DateTime.Now.Ticks);
+            Random seekRand = new(seekSeek);
+            int beginSeek = seekRand.Next(0, int.MaxValue - length * 10000);
+            int[] seeks = new int[length];
+            for (int i = 0; i < length; i++)
+            {
+                beginSeek += 10000;
+                seeks[i] = beginSeek;
+            }
+            //生成随机数字  
+            for (int i = 0; i < length; i++)
+            {
+                Random rand = new(seeks[i]);
+                int pownum = 1 * (int)Math.Pow(10, length);
+                RandMembers[i] = rand.Next(pownum, int.MaxValue);
+            }
+            //抽取随机数字  
+            for (int i = 0; i < length; i++)
+            {
+                string numStr = RandMembers[i].ToString();
+                int numLength = numStr.Length;
+                Random rand = new();
+                int numPosition = rand.Next(0, numLength - 1);
+                GetNumbers[i] = int.Parse(numStr.Substring(numPosition, 1));
+            }
+            //生成验证码  
+            for (int i = 0; i < length; i++)
+            {
+                VerifyCode += GetNumbers[i].ToString();
+            }
+            return VerifyCode;
+        }
+
+        /// <summary>
+        /// 字母验证码
+        /// </summary>
+        /// <param name="length"></param>
+        /// <returns></returns>
+        private static string LetterVerifyCode(int length)
+        {
+            char[] Verification = new char[length];
+            char[] Dictionary = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
+                'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z' };
+            Random random = new();
+            for (int i = 0; i < length; i++)
+            {
+                Verification[i] = Dictionary[random.Next(Dictionary.Length - 1)];
+            }
+            return new string(Verification);
+        }
+
+        /// <summary>
+        /// 混合验证码
+        /// </summary>
+        /// <param name="length"></param>
+        /// <returns></returns>
+        private static string MixVerifyCode(int length)
+        {
+            char[] Verification = new char[length];
+            char[] Dictionary = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z',
+                '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
+                'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'
+            };
+            Random random = new();
+            for (int i = 0; i < length; i++)
+            {
+                Verification[i] = Dictionary[random.Next(Dictionary.Length - 1)];
+            }
+            return new string(Verification);
+        }
+    }
+
+    #endregion
 }
diff --git a/FunGame.Core/Interface/Base/IMailSender.cs b/FunGame.Core/Interface/Base/IMailSender.cs
new file mode 100644
index 0000000..5a3adf9
--- /dev/null
+++ b/FunGame.Core/Interface/Base/IMailSender.cs
@@ -0,0 +1,11 @@
+using Milimoe.FunGame.Core.Library.Constant;
+
+namespace Milimoe.FunGame.Core.Interface.Base
+{
+    public interface IMailSender
+    {
+        public string SenderMailAddress { get; }
+        public string SenderName { get; }
+        public string SenderPassword { get; }
+    }
+}
diff --git a/FunGame.Core/Library/Common/Network/MailObject.cs b/FunGame.Core/Library/Common/Network/MailObject.cs
new file mode 100644
index 0000000..5000760
--- /dev/null
+++ b/FunGame.Core/Library/Common/Network/MailObject.cs
@@ -0,0 +1,28 @@
+using System.Net.Mail;
+
+namespace Milimoe.FunGame.Core.Library.Common.Network
+{
+    public class MailObject
+    {
+        public string Sender { get; } = "";
+        public string SenderName { get; } = "";
+        public string Subject { get; } = "";
+        public string Body { get; } = "";
+        public MailPriority Priority { get; } = MailPriority.Normal;
+        public bool HTML { get; } = false;
+        public string[] ToList { get; } = Array.Empty<string>();
+        public string[] CCList { get; } = Array.Empty<string>();
+
+        public MailObject(string Sender, string SenderName, string Subject, string Body, MailPriority Priority, bool HTML, string[] ToList, string[] CcList)
+        {
+            this.Sender = Sender;
+            this.SenderName = SenderName;
+            this.Subject = Subject;
+            this.Body = Body;
+            this.Priority = Priority;
+            this.HTML = HTML;
+            this.ToList = ToList;
+            this.CCList = CcList;
+        }
+    }
+}
diff --git a/FunGame.Core/Library/Common/Network/ServerSocket.cs b/FunGame.Core/Library/Common/Network/ServerSocket.cs
index a232b07..8835a47 100644
--- a/FunGame.Core/Library/Common/Network/ServerSocket.cs
+++ b/FunGame.Core/Library/Common/Network/ServerSocket.cs
@@ -16,10 +16,10 @@ namespace Milimoe.FunGame.Core.Library.Common.Network
         public string ServerNotice { get; } = "";
         public bool Connected => Instance != null && Instance.Connected;
         public bool Receiving => _Receiving;
-        public List<BaseModel> GetUsersList => UserThreads.GetList();
-        public int UsersCount => UserThreads.Count;
+        public List<BaseModel> GetUsersList => OnlineUsers.GetList();
+        public int UsersCount => OnlineUsers.Count;
 
-        private readonly ThreadManager UserThreads;
+        private readonly ThreadManager OnlineUsers;
         private bool _Receiving = false;
 
         private ServerSocket(System.Net.Sockets.Socket Instance, int ServerPort, int MaxConnection = 0)
@@ -27,9 +27,9 @@ namespace Milimoe.FunGame.Core.Library.Common.Network
             this.Instance = Instance;
             this.ServerPort = ServerPort;
             if (MaxConnection <= 0)
-                UserThreads = new ThreadManager();
+                OnlineUsers = new ThreadManager();
             else
-                UserThreads = new ThreadManager(MaxConnection);
+                OnlineUsers = new ThreadManager(MaxConnection);
         }
 
         public static ServerSocket StartListening(int Port = 22222, int MaxConnection = 0)
@@ -54,22 +54,22 @@ namespace Milimoe.FunGame.Core.Library.Common.Network
 
         public bool AddUser(string UserName, BaseModel t)
         {
-            return UserThreads.Add(UserName, t);
+            return OnlineUsers.Add(UserName, t);
         }
         
         public bool RemoveUser(string UserName)
         {
-            return UserThreads.Remove(UserName);
+            return OnlineUsers.Remove(UserName);
         }
         
         public bool ContainsUser(string UserName)
         {
-            return UserThreads.ContainsKey(UserName);
+            return OnlineUsers.ContainsKey(UserName);
         }
         
         public BaseModel GetUser(string UserName)
         {
-            return UserThreads[UserName];
+            return OnlineUsers[UserName];
         }
 
         public SocketResult Send(SocketMessageType type, params object[] objs)
diff --git a/FunGame.Core/Library/Constant/ConstantSet.cs b/FunGame.Core/Library/Constant/ConstantSet.cs
index aa1da29..33b9fbf 100644
--- a/FunGame.Core/Library/Constant/ConstantSet.cs
+++ b/FunGame.Core/Library/Constant/ConstantSet.cs
@@ -34,6 +34,7 @@
         public const string HeartBeat = "HeartBeat";
         public const string IntoRoom = "IntoRoom";
         public const string Chat = "Chat";
+        public const string QuitRoom = "QuitRoom";
     }
 
     public class ReflectionSet
diff --git a/FunGame.Core/Library/Constant/ResultEnum.cs b/FunGame.Core/Library/Constant/ResultEnum.cs
index 8c5280a..8f70119 100644
--- a/FunGame.Core/Library/Constant/ResultEnum.cs
+++ b/FunGame.Core/Library/Constant/ResultEnum.cs
@@ -40,4 +40,11 @@
         SQLError,
         IsExist
     }
+
+    public enum MailSendResult
+    {
+        Success,
+        Fail,
+        NotSend
+    }
 }
diff --git a/FunGame.Core/Library/Constant/TypeEnum.cs b/FunGame.Core/Library/Constant/TypeEnum.cs
index 4c58996..c231407 100644
--- a/FunGame.Core/Library/Constant/TypeEnum.cs
+++ b/FunGame.Core/Library/Constant/TypeEnum.cs
@@ -157,6 +157,14 @@
         Particle
     }
 
+    public enum VerifyCodeType
+    {
+        NumberVerifyCode,
+        LetterVerifyCode,
+        MixVerifyCode,
+        ImageVerifyCode
+    }
+
     public enum RoleType
     {
         Core,
diff --git a/FunGame.Core/Library/Exception/Exception.cs b/FunGame.Core/Library/Exception/Exception.cs
index 00ac5ee..7b446e7 100644
--- a/FunGame.Core/Library/Exception/Exception.cs
+++ b/FunGame.Core/Library/Exception/Exception.cs
@@ -119,4 +119,9 @@
     {
         public override string Message => "无法发送公共信息 (#10024)";
     }
+
+    public class CanNotSendEmailException : Exception
+    {
+        public override string Message => "无法发送邮件 (#10025)";
+    }
 }
diff --git a/FunGame.Core/Library/Server/BaseServerModel.cs b/FunGame.Core/Library/Server/BaseServerModel.cs
index 1b977fe..9d8017a 100644
--- a/FunGame.Core/Library/Server/BaseServerModel.cs
+++ b/FunGame.Core/Library/Server/BaseServerModel.cs
@@ -1,7 +1,6 @@
 using Milimoe.FunGame.Core.Entity;
 using Milimoe.FunGame.Core.Library.Common.Network;
 using Milimoe.FunGame.Core.Library.Constant;
-using Milimoe.FunGame.Core.Service;
 
 namespace Milimoe.FunGame.Core.Library.Server
 {
@@ -12,34 +11,9 @@ namespace Milimoe.FunGame.Core.Library.Server
         public abstract Task? Task { get; }
         public abstract string ClientName { get; }
         public abstract User? User { get; }
-        public List<BaseModel> GetClientsList => ClientThreads.GetList();
-        public int ClientsCount => ClientThreads.Count;
 
         public abstract bool Read(ClientSocket socket);
         public abstract bool Send(ClientSocket socket, SocketMessageType type, params object[] objs);
         public abstract void Start();
-
-        private readonly ThreadManager ClientThreads = new();
-
-        public bool AddClient(string ClientName, BaseModel t)
-        {
-            return ClientThreads.Add(ClientName, t);
-        }
-
-        public bool RemoveClient(string ClientName)
-        {
-            return ClientThreads.Remove(ClientName);
-        }
-
-        public bool ContainsClient(string ClientName)
-        {
-            return ClientThreads.ContainsKey(ClientName);
-        }
-
-        public BaseModel GetClient(string ClientName)
-        {
-            return ClientThreads[ClientName];
-        }
-
     }
 }
diff --git a/FunGame.Core/Library/Server/SmtpClientInfo.cs b/FunGame.Core/Library/Server/SmtpClientInfo.cs
new file mode 100644
index 0000000..d220375
--- /dev/null
+++ b/FunGame.Core/Library/Server/SmtpClientInfo.cs
@@ -0,0 +1,31 @@
+using Milimoe.FunGame.Core.Interface.Base;
+
+namespace Milimoe.FunGame.Core.Library.Server
+{
+    public class SmtpClientInfo : IMailSender
+    {
+        public string Host => _Host;
+        public int Port => _Port;
+        public bool OpenSSL => _OpenSSL;
+        public string SenderMailAddress => _SenderMailAddress;
+        public string SenderName => _SenderName;
+        public string SenderPassword => _SenderPassword;
+
+        private string _Host = "";
+        private int _Port = 587;
+        private bool _OpenSSL = true;
+        private string _SenderMailAddress = "";
+        private string _SenderName = "";
+        private string _SenderPassword = "";
+
+        internal SmtpClientInfo(string SenderMailAddress, string SenderName, string SenderPassword, string Host, int Port, bool OpenSSL)
+        {
+            _Host = Host;
+            _Port = Port;
+            _OpenSSL = OpenSSL;
+            _SenderMailAddress = SenderMailAddress;
+            _SenderName = SenderName;
+            _SenderPassword = SenderPassword;
+        }
+    }
+}
diff --git a/FunGame.Core/Service/MailManager.cs b/FunGame.Core/Service/MailManager.cs
new file mode 100644
index 0000000..8f6116c
--- /dev/null
+++ b/FunGame.Core/Service/MailManager.cs
@@ -0,0 +1,54 @@
+using System.Net;
+using System.Net.Mail;
+using Milimoe.FunGame.Core.Api.Transmittal;
+using Milimoe.FunGame.Core.Library.Common.Network;
+using Milimoe.FunGame.Core.Library.Constant;
+using Milimoe.FunGame.Core.Library.Server;
+
+namespace Milimoe.FunGame.Core.Service
+{
+    internal class MailManager
+    {
+        internal SmtpClient? SmtpClient { get; }
+
+        internal static MailSendResult Send(MailSender Sender, MailObject Mail)
+        {
+            SmtpClientInfo Info = Sender.SmtpClientInfo;
+            SmtpClient Smtp = new()
+            {
+                Host = Info.Host,
+                Port = Info.Port,
+                EnableSsl = Info.OpenSSL,
+                DeliveryMethod = SmtpDeliveryMethod.Network,
+                Credentials = new NetworkCredential(Info.SenderMailAddress, Info.SenderPassword)
+            };
+            MailMessage Msg = new()
+            {
+                Subject = Mail.Subject,
+                SubjectEncoding = General.DefaultEncoding,
+                Body = Mail.Body,
+                BodyEncoding = General.DefaultEncoding,
+                From = new MailAddress(Mail.Sender, Mail.SenderName, General.DefaultEncoding),
+                IsBodyHtml = Mail.HTML,
+                Priority = Mail.Priority
+            };
+            foreach (string To in Mail.ToList)
+            {
+                Msg.To.Add(To);
+            }
+            foreach (string CC in Mail.CCList)
+            {
+                Msg.CC.Add(CC);
+            }
+            try
+            {
+                Smtp.Send(Msg);
+                return MailSendResult.Success;
+            }
+            catch
+            {
+                return MailSendResult.Fail;
+            }
+        }
+    }
+}
diff --git a/FunGame.Desktop/Library/Config/Constant.cs b/FunGame.Desktop/Library/Config/Constant.cs
index 3e46a34..21fd00b 100644
--- a/FunGame.Desktop/Library/Config/Constant.cs
+++ b/FunGame.Desktop/Library/Config/Constant.cs
@@ -22,6 +22,7 @@ namespace Milimoe.FunGame.Desktop.Library
         public const string Close = ".close";
         public const string IntoRoom = ".intoroom";
         public const string Chat = ".chat";
+        public const string QuitRoom = ".quitroom";
     }
 
     /// <summary>