diff --git a/ComputerShopFileImplement/DataFileSingleton.cs b/ComputerShopFileImplement/DataFileSingleton.cs
index 110e6cc..f8471f1 100644
--- a/ComputerShopFileImplement/DataFileSingleton.cs
+++ b/ComputerShopFileImplement/DataFileSingleton.cs
@@ -16,11 +16,13 @@ namespace ComputerShopFileImplement
         private readonly string ComputerFileName = "Computer.xml";
         private readonly string ClientFileName = "Client.xml";
         private readonly string ImplementerFileName = "Implementer.xml";
+        private readonly string MessageInfoFileName = "MessageInfo.xml";
         public List<Component> Components { get; private set; }
         public List<Order> Orders { get; private set; }
         public List<Computer> Computers { get; private set; }
         public List<Client> Clients { get; private set; }
         public List<Implementer> Implementers { get; private set; }
+        public List<MessageInfo> Messages { get; private set; }
         public static DataFileSingleton GetInstance()
         {
             if (instance == null)
@@ -36,6 +38,7 @@ namespace ComputerShopFileImplement
         public void SaveOrders() => SaveData(Orders, OrderFileName, "Orders", x => x.GetXElement);
         public void SaveClients() => SaveData(Clients, ClientFileName, "Clients", x => x.GetXElement);
         public void SaveImplementers() => SaveData(Orders, ImplementerFileName, "Implementers", x => x.GetXElement);
+        public void SaveMessages() => SaveData(Orders, ImplementerFileName, "Messages", x => x.GetXElement);
         private DataFileSingleton()
         {
             Components = LoadData(ComponentFileName, "Component", x => Component.Create(x)!)!;
@@ -43,6 +46,7 @@ namespace ComputerShopFileImplement
             Orders = LoadData(OrderFileName, "Order", x => Order.Create(x)!)!;
             Clients = LoadData(ClientFileName, "Client", x => Client.Create(x)!)!;
             Implementers = LoadData(ImplementerFileName, "Impleneter", x => Implementer.Create(x)!)!;
+            Messages = LoadData(MessageInfoFileName, "MessageInfo", x => MessageInfo.Create(x)!)!;
         }
         private static List<T>? LoadData<T>(string filename, string xmlNodeName,
        Func<XElement, T> selectFunction)
diff --git a/ComputerShopFileImplement/Implements/MessageInfoStorage.cs b/ComputerShopFileImplement/Implements/MessageInfoStorage.cs
new file mode 100644
index 0000000..2346f6b
--- /dev/null
+++ b/ComputerShopFileImplement/Implements/MessageInfoStorage.cs
@@ -0,0 +1,58 @@
+using ComputerShopContracts.BindingModels;
+using ComputerShopContracts.SearchModels;
+using ComputerShopContracts.StoragesContracts;
+using ComputerShopContracts.ViewModels;
+using ComputerShopFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopFileImplement.Implements
+{
+    public class MessageInfoStorage : IMessageInfoStorage
+    {
+        private readonly DataFileSingleton _source;
+        public MessageInfoStorage()
+        {
+            _source = DataFileSingleton.GetInstance();
+        }
+
+        public MessageInfoViewModel? GetElement(MessageInfoSearchModel model)
+        {
+            if (model.MessageId != null)
+            {
+                return _source.Messages.FirstOrDefault(x => x.MessageId == model.MessageId)?.GetViewModel;
+            }
+            return null;
+        }
+
+        public List<MessageInfoViewModel> GetFilteredList(MessageInfoSearchModel model)
+        {
+            return _source.Messages
+                .Where(x => x.ClientId == model.ClientId)
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public List<MessageInfoViewModel> GetFullList()
+        {
+            return _source.Messages
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public MessageInfoViewModel? Insert(MessageInfoBindingModel model)
+        {
+            var newMessage = MessageInfo.Create(model);
+            if (newMessage == null)
+            {
+                return null;
+            }
+            _source.Messages.Add(newMessage);
+            _source.SaveMessages();
+            return newMessage.GetViewModel;
+        }
+    }
+}
diff --git a/ComputerShopFileImplement/Models/MessageInfo.cs b/ComputerShopFileImplement/Models/MessageInfo.cs
new file mode 100644
index 0000000..3f34a64
--- /dev/null
+++ b/ComputerShopFileImplement/Models/MessageInfo.cs
@@ -0,0 +1,80 @@
+using ComputerShopContracts.BindingModels;
+using ComputerShopContracts.ViewModels;
+using ComputerShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace ComputerShopFileImplement.Models
+{
+    public class MessageInfo : IMessageInfoModel
+    {
+        public string MessageId { get; private set; } = string.Empty;
+
+        public int? ClientId { get; private set; }
+
+        public string SenderName { get; private set; } = string.Empty;
+
+        public DateTime DateDelivery { get; private set; } = DateTime.Now;
+
+        public string Subject { get; private set; } = string.Empty;
+
+        public string Body { get; private set; } = string.Empty;
+
+        public static MessageInfo? Create(MessageInfoBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new()
+            {
+                Body = model.Body,
+                Subject = model.Subject,
+                ClientId = model.ClientId,
+                MessageId = model.MessageId,
+                SenderName = model.SenderName,
+                DateDelivery = model.DateDelivery,
+            };
+        }
+
+        public static MessageInfo? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            return new()
+            {
+                Body = element.Attribute("Body")!.Value,
+                Subject = element.Attribute("Subject")!.Value,
+                ClientId = Convert.ToInt32(element.Attribute("ClientId")!.Value),
+                MessageId = element.Attribute("MessageId")!.Value,
+                SenderName = element.Attribute("SenderName")!.Value,
+                DateDelivery = Convert.ToDateTime(element.Attribute("DateDelivery")!.Value),
+            };
+        }
+
+        public MessageInfoViewModel GetViewModel => new()
+        {
+            Body = Body,
+            Subject = Subject,
+            ClientId = ClientId,
+            MessageId = MessageId,
+            SenderName = SenderName,
+            DateDelivery = DateDelivery,
+        };
+
+        public XElement GetXElement => new("MessageInfo",
+            new XAttribute("Body", Body),
+            new XAttribute("Subject", Subject),
+            new XAttribute("ClientId", ClientId),
+            new XAttribute("MessageId", MessageId),
+            new XAttribute("SenderName", SenderName),
+            new XAttribute("DateDelivery", DateDelivery)
+            );
+    }
+}
diff --git a/ComputerShopListImplement/Implements/MessageInfoStorage.cs b/ComputerShopListImplement/Implements/MessageInfoStorage.cs
new file mode 100644
index 0000000..14f2194
--- /dev/null
+++ b/ComputerShopListImplement/Implements/MessageInfoStorage.cs
@@ -0,0 +1,65 @@
+using ComputerShopContracts.BindingModels;
+using ComputerShopContracts.SearchModels;
+using ComputerShopContracts.StoragesContracts;
+using ComputerShopContracts.ViewModels;
+using ComputerShopListImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopListImplement.Implements
+{
+    public class MessageInfoStorage : IMessageInfoStorage
+    {
+        private readonly DataListSingleton _source;
+        public MessageInfoStorage()
+        {
+            _source = DataListSingleton.GetInstance();
+        }
+
+        public MessageInfoViewModel? GetElement(MessageInfoSearchModel model)
+        {
+            foreach (var message in _source.Messages)
+            {
+                if (model.MessageId != null && model.MessageId.Equals(message.MessageId)) return message.GetViewModel;
+            }
+            return null;
+        }
+
+        public List<MessageInfoViewModel> GetFilteredList(MessageInfoSearchModel model)
+        {
+            List<MessageInfoViewModel> result = new();
+            foreach (var item in _source.Messages)
+            {
+                if (item.ClientId.HasValue && item.ClientId == model.ClientId)
+                {
+                    result.Add(item.GetViewModel);
+                }
+            }
+            return result;
+        }
+
+        public List<MessageInfoViewModel> GetFullList()
+        {
+            List<MessageInfoViewModel> result = new();
+            foreach (var item in _source.Messages)
+            {
+                result.Add(item.GetViewModel);
+            }
+            return result;
+        }
+
+        public MessageInfoViewModel? Insert(MessageInfoBindingModel model)
+        {
+            var newMessage = MessageInfo.Create(model);
+            if (newMessage == null)
+            {
+                return null;
+            }
+            _source.Messages.Add(newMessage);
+            return newMessage.GetViewModel;
+        }
+    }
+}
diff --git a/ComputerShopListImplement/Models/DataListSingleton.cs b/ComputerShopListImplement/Models/DataListSingleton.cs
index 28f714e..bb0c1ef 100644
--- a/ComputerShopListImplement/Models/DataListSingleton.cs
+++ b/ComputerShopListImplement/Models/DataListSingleton.cs
@@ -14,6 +14,7 @@ namespace ComputerShopListImplement.Models
         public List<Computer> Computers { get; set; }
         public List<Implementer> Implementers { get; set; }
         public List<Client> Clients { get; set; }
+        public List<MessageInfo> Messages { get; set; }
         private DataListSingleton()
         {
             Components = new List<Component>();
@@ -21,6 +22,7 @@ namespace ComputerShopListImplement.Models
             Computers = new List<Computer>();
             Clients = new List<Client>();
             Implementers = new List<Implementer>();
+            Messages = new List<MessageInfo>();
         }
         public static DataListSingleton GetInstance()
         {
diff --git a/ComputerShopListImplement/Models/MessageInfo.cs b/ComputerShopListImplement/Models/MessageInfo.cs
new file mode 100644
index 0000000..666b7f3
--- /dev/null
+++ b/ComputerShopListImplement/Models/MessageInfo.cs
@@ -0,0 +1,53 @@
+using ComputerShopContracts.BindingModels;
+using ComputerShopContracts.ViewModels;
+using ComputerShopDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ComputerShopListImplement.Models
+{
+    public class MessageInfo : IMessageInfoModel
+    {
+        public string MessageId { get; private set; } = string.Empty;
+
+        public int? ClientId { get; private set; }
+
+        public string SenderName { get; private set; } = string.Empty;
+
+        public DateTime DateDelivery { get; private set; } = DateTime.Now;
+
+        public string Subject { get; private set; } = string.Empty;
+
+        public string Body { get; private set; } = string.Empty;
+
+        public static MessageInfo? Create(MessageInfoBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new()
+            {
+                Body = model.Body,
+                Subject = model.Subject,
+                ClientId = model.ClientId,
+                MessageId = model.MessageId,
+                SenderName = model.SenderName,
+                DateDelivery = model.DateDelivery,
+            };
+        }
+
+        public MessageInfoViewModel GetViewModel => new()
+        {
+            Body = Body,
+            Subject = Subject,
+            ClientId = ClientId,
+            MessageId = MessageId,
+            SenderName = SenderName,
+            DateDelivery = DateDelivery,
+        };
+    }
+}