Вроде работает.

Confectionery/ConfectioneryBusinessLogic/BusinessLogics/ClientLogic.cs

@@ -8,6 +8,7 @@ using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
+using System.Text.RegularExpressions;
 using System.Threading.Tasks;
 
 namespace ConfectioneryBusinessLogic.BusinessLogics
@@ -105,9 +106,13 @@ namespace ConfectioneryBusinessLogic.BusinessLogics
             {
                 throw new ArgumentNullException("Нет логина клиента", nameof(model.Email));
             }
-            if (string.IsNullOrEmpty(model.Password))
+            if (!Regex.IsMatch(model.Email, @"^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$"))
             {
-                throw new ArgumentNullException("У клиента отсутствует пароль", nameof(model.Email));
+                throw new ArgumentException("Некорретно введенный email", nameof(model.Email));
+            }
+            if (!Regex.IsMatch(model.Password, @"^(?=.*\d)(?=.*\W)(?=.*[^\d\s]).+$"))
+            {
+                throw new ArgumentException("Некорректно  введенный пароль. Пароль должен содержать хотя бы одну букву, цифру и не буквенный символ", nameof(model.Password));
             }          
             _logger.LogInformation("Client. Id: {Id}, FIO: {fio}, email: {email}", model.Id, model.ClientFIO, model.Email, model.Password);
             var element = _clientStorage.GetElement(new ClientSearchModel

Confectionery/ConfectioneryBusinessLogic/BusinessLogics/MessageInfoLogic.cs

@@ -0,0 +1,50 @@
+using ConfectioneryContracts.BindingModels;
+using ConfectioneryContracts.BusinessLogicsContracts;
+using ConfectioneryContracts.SearchModels;
+using ConfectioneryContracts.StoragesContracts;
+using ConfectioneryContracts.ViewModels;
+using ConfectioneryDataModels.Models;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConfectioneryBusinessLogic.BusinessLogics
+{
+    public class MessageInfoLogic : IMessageInfoLogic
+    {
+        private readonly ILogger _logger;
+        private readonly IMessageInfoStorage _messageInfoStorage;
+        public MessageInfoLogic(ILogger<MessageInfoLogic> logger, IMessageInfoStorage MessageInfoStorage)
+        {
+            _logger = logger;
+            _messageInfoStorage = MessageInfoStorage;
+        }
+
+        public bool Create(MessageInfoBindingModel model)
+        {
+            if (_messageInfoStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public List<MessageInfoViewModel>? ReadList(MessageInfoSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. MessageId:{MessageId}.ClientId:{ClientId} ", model?.MessageId, model?.ClientId);
+            var list = (model == null) ? _messageInfoStorage.GetFullList()
+                : _messageInfoStorage.GetFilteredList(model);
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
+            return list;
+        }
+    }
+}

Confectionery/ConfectioneryBusinessLogic/BusinessLogics/OrderLogic.cs

@@ -1,4 +1,5 @@
-using ConfectioneryContracts.BindingModels;
+using ConfectioneryBusinessLogic.MailWorker;
+using ConfectioneryContracts.BindingModels;
 using ConfectioneryContracts.BusinessLogicsContracts;
 using ConfectioneryContracts.SearchModels;
 using ConfectioneryContracts.StoragesContracts;
@@ -16,13 +17,16 @@ namespace ConfectioneryBusinessLogic.BusinessLogics
     public class OrderLogic : IOrderLogic
     {
         private readonly ILogger _logger;
-
         private readonly IOrderStorage _orderStorage;
+        private readonly AbstractMailWorker _mailWorker;
+        private readonly IClientLogic _clientLogic;
 
-        public OrderLogic(ILogger<OrderLogic> logger, IOrderStorage orderStorage)
+        public OrderLogic(ILogger<OrderLogic> logger, IOrderStorage orderStorage, AbstractMailWorker mailWorker, IClientLogic clientLogic)
         {
             _logger = logger;
             _orderStorage = orderStorage;
+            _mailWorker = mailWorker;
+            _clientLogic = clientLogic;
         }
 
         public bool CreateOrder(OrderBindingModel model)
@@ -34,12 +38,14 @@ namespace ConfectioneryBusinessLogic.BusinessLogics
                 return false;
             }
             model.Status = OrderStatus.Принят;
-            if (_orderStorage.Insert(model) == null)
+            var result = _orderStorage.Insert(model);
+            if (result == null)
             {
                 model.Status = OrderStatus.Неизвестен;
                 _logger.LogWarning("Insert operation failed");
                 return false;
             }
+            SendOrderStatusMail(result.ClientId, $"Новый заказ создан. Номер заказа #{result.Id}", $"Заказ #{result.Id} от {result.DateCreate} на сумму {result.Sum:0.00} принят");
             return true;
         }
 
@@ -70,12 +76,14 @@ namespace ConfectioneryBusinessLogic.BusinessLogics
                 model.DateImplement = viewModel.DateImplement;
             }
             CheckModel(model);
-            if (_orderStorage.Update(model) == null)
+            var result = _orderStorage.Update(model);
+            if (result == null)
             {
                 model.Status--;
                 _logger.LogWarning("Update operation failed");
                 return false;
             }
+            SendOrderStatusMail(result.ClientId, $"Изменен статус заказа #{result.Id}", $"Заказ #{model.Id} изменен статус на {result.Status}");
             return true;
         }
 
@@ -153,5 +161,21 @@ namespace ConfectioneryBusinessLogic.BusinessLogics
             _logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
             return element;
         }
+
+        private bool SendOrderStatusMail(int clientId, string subject, string text)
+        {
+            var client = _clientLogic.ReadElement(new() { Id = clientId });
+            if (client == null)
+            {
+                return false;
+            }
+            _mailWorker.MailSendAsync(new()
+            {
+                MailAddress = client.Email,
+                Subject = subject,
+                Text = text
+            });
+            return true;
+        }
     }
 }

Confectionery/ConfectioneryBusinessLogic/ConfectioneryBusinessLogic.csproj

@@ -8,6 +8,7 @@
 
   <ItemGroup>
     <PackageReference Include="DocumentFormat.OpenXml" Version="2.19.0" />
+    <PackageReference Include="MailKit" Version="4.0.0" />
     <PackageReference Include="Microsoft.Extensions.Logging" Version="7.0.0" />
     <PackageReference Include="PdfSharp.MigraDoc.Standard" Version="1.51.15" />
   </ItemGroup>

Confectionery/ConfectioneryBusinessLogic/MailWorker/AbstractMailWorker.cs

@@ -0,0 +1,100 @@
+using ConfectioneryContracts.BindingModels;
+using ConfectioneryContracts.BusinessLogicsContracts;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConfectioneryBusinessLogic.MailWorker
+{
+    public abstract class AbstractMailWorker
+    {
+        protected string _mailLogin = string.Empty;
+
+        protected string _mailPassword = string.Empty;
+
+        protected string _smtpClientHost = string.Empty;
+
+        protected int _smtpClientPort;
+
+        protected string _popHost = string.Empty;
+
+        protected int _popPort;
+
+        private readonly IMessageInfoLogic _messageInfoLogic;
+        private readonly IClientLogic _clientLogic;
+
+        private readonly ILogger _logger;
+
+        public AbstractMailWorker(ILogger<AbstractMailWorker> logger, IMessageInfoLogic messageInfoLogic, IClientLogic clientLogic)
+        {
+            _logger = logger;
+            _messageInfoLogic = messageInfoLogic;
+            _clientLogic = clientLogic;
+        }
+
+        public void MailConfig(MailConfigBindingModel config)
+        {
+            _mailLogin = config.MailLogin;
+            _mailPassword = config.MailPassword;
+            _smtpClientHost = config.SmtpClientHost;
+            _smtpClientPort = config.SmtpClientPort;
+            _popHost = config.PopHost;
+            _popPort = config.PopPort;
+            _logger.LogDebug("Config: {login}, {password}, {clientHost}, {clientPOrt}, {popHost}, {popPort}", _mailLogin, _mailPassword, _smtpClientHost, _smtpClientPort, _popHost, _popPort);
+        }
+
+        public async void MailSendAsync(MailSendInfoBindingModel info)
+        {
+            if (string.IsNullOrEmpty(_mailLogin) || string.IsNullOrEmpty(_mailPassword))
+            {
+                return;
+            }
+
+            if (string.IsNullOrEmpty(_smtpClientHost) || _smtpClientPort == 0)
+            {
+                return;
+            }
+
+            if (string.IsNullOrEmpty(info.MailAddress) || string.IsNullOrEmpty(info.Subject) || string.IsNullOrEmpty(info.Text))
+            {
+                return;
+            }
+
+            _logger.LogDebug("Send Mail: {To}, {Subject}", info.MailAddress, info.Subject);
+            await SendMailAsync(info);
+        }
+
+        public async void MailCheck()
+        {
+            if (string.IsNullOrEmpty(_mailLogin) || string.IsNullOrEmpty(_mailPassword))
+            {
+                return;
+            }
+
+            if (string.IsNullOrEmpty(_popHost) || _popPort == 0)
+            {
+                return;
+            }
+
+            if (_messageInfoLogic == null)
+            {
+                return;
+            }
+
+            var list = await ReceiveMailAsync();
+            _logger.LogDebug("Check Mail: {Count} new mails", list.Count);
+            foreach (var mail in list)
+            {
+                mail.ClientId = _clientLogic.ReadElement(new() { Email = mail.SenderName })?.Id;
+                _messageInfoLogic.Create(mail);
+            }
+        }
+
+        protected abstract Task SendMailAsync(MailSendInfoBindingModel info);
+
+        protected abstract Task<List<MessageInfoBindingModel>> ReceiveMailAsync();
+    }
+}

Confectionery/ConfectioneryBusinessLogic/MailWorker/MailKitWorker.cs

@@ -0,0 +1,82 @@
+using ConfectioneryContracts.BindingModels;
+using ConfectioneryContracts.BusinessLogicsContracts;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Net.Mail;
+using System.Net;
+using System.Text;
+using System.Threading.Tasks;
+using MailKit.Net.Pop3;
+using MailKit.Security;
+
+namespace ConfectioneryBusinessLogic.MailWorker
+{
+    public class MailKitWorker : AbstractMailWorker
+    {
+        public MailKitWorker(ILogger<MailKitWorker> logger, IMessageInfoLogic messageInfoLogic, IClientLogic clientLogic) : base(logger, messageInfoLogic, clientLogic) { }
+
+        protected override async Task SendMailAsync(MailSendInfoBindingModel info)
+        {
+            using var objMailMessage = new MailMessage();
+            using var objSmtpClient = new SmtpClient(_smtpClientHost, _smtpClientPort);
+            try
+            {
+                objMailMessage.From = new MailAddress(_mailLogin);
+                objMailMessage.To.Add(new MailAddress(info.MailAddress));
+                objMailMessage.Subject = info.Subject;
+                objMailMessage.Body = info.Text;
+                objMailMessage.SubjectEncoding = Encoding.UTF8;
+                objMailMessage.BodyEncoding = Encoding.UTF8;
+
+                objSmtpClient.UseDefaultCredentials = false;
+                objSmtpClient.EnableSsl = true;
+                objSmtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
+                objSmtpClient.Credentials = new NetworkCredential(_mailLogin, _mailPassword);
+
+                await Task.Run(() => objSmtpClient.Send(objMailMessage));
+            }
+            catch (Exception)
+            {
+                throw;
+            }
+        }
+
+        protected override async Task<List<MessageInfoBindingModel>> ReceiveMailAsync()
+        {
+            var list = new List<MessageInfoBindingModel>();
+            using var client = new Pop3Client();
+            await Task.Run(() =>
+            {
+                try
+                {
+                    client.Connect(_popHost, _popPort, SecureSocketOptions.SslOnConnect);
+                    client.Authenticate(_mailLogin, _mailPassword);
+                    for (int i = 0; i < client.Count; i++)
+                    {
+                        var message = client.GetMessage(i);
+                        foreach (var mail in message.From.Mailboxes)
+                        {
+                            list.Add(new MessageInfoBindingModel
+                            {
+                                DateDelivery = message.Date.DateTime,
+                                MessageId = message.MessageId,
+                                SenderName = mail.Address,
+                                Subject = message.Subject,
+                                Body = message.TextBody
+                            });
+                        }
+                    }
+                }
+                catch (AuthenticationException)
+                { }
+                finally
+                {
+                    client.Disconnect(true);
+                }
+            });
+            return list;
+        }
+    }
+}

Confectionery/ConfectioneryClientApp/Controllers/HomeController.cs

@@ -139,5 +139,15 @@ namespace ConfectioneryClientApp.Controllers
             var prod = APIClient.GetRequest<PastryViewModel>($"api/main/getpastry?pastryId={pastry}");
             return count * (prod?.Price ?? 1);
         }
+
+        [HttpGet]
+        public IActionResult Mails()
+        {
+            if (APIClient.Client == null)
+            {
+                return Redirect("~/Home/Enter");
+            }
+            return View(APIClient.GetRequest<List<MessageInfoViewModel>>($"api/client/getmessages?clientId={APIClient.Client.Id}"));
+        }
     }
 }

Confectionery/ConfectioneryClientApp/Views/Home/Mails.cshtml

@@ -0,0 +1,48 @@
+@using ConfectioneryContracts.ViewModels
+@model List<MessageInfoViewModel>
+@{
+	ViewData["Title"] = "Mails";
+}
+<div class="text-center">
+	<h1 class="display-4">Письма</h1>
+</div>
+<div class="text-center">
+@{
+	if (Model == null)
+	{
+	<h3 class="display-4">Авторизируйтесь</h3>
+		return;
+	}
+	<table class="table">
+		<thead>
+			<tr>
+				<th>
+					Дата письма
+				</th>
+				<th>
+					Заголовок
+				</th>
+				<th>
+					Текст
+				</th>
+			</tr>
+		</thead>
+		<tbody>
+			@foreach (var item in Model)
+			{
+				<tr>
+					<td>
+						@Html.DisplayFor(modelItem => item.DateDelivery)
+					</td>
+					<td>
+						@Html.DisplayFor(modelItem => item.Subject)
+					</td>
+					<td>
+						@Html.DisplayFor(modelItem => item.Body)
+					</td>
+				</tr>
+			}
+		</tbody>
+	</table>
+}
+</div>

Confectionery/ConfectioneryClientApp/Views/Shared/_Layout.cshtml

@@ -25,6 +25,9 @@
                         <li class="nav-item">
                             <a class="nav-link text-dark" asparea="" asp-controller="Home" asp-action="Privacy">Личные данные</a>
                         </li>
+                        <li class="nav-item">
+                            <a class="nav-link text-dark" asparea="" asp-controller="Home" asp-action="Mails">Письма</a>
+                        </li>
                         <li class="nav-item">
                             <a class="nav-link text-dark" asparea="" asp-controller="Home" asp-action="Enter">Вход</a>
                         </li>

Confectionery/ConfectioneryContracts/BindingModels/MailConfigBindingModel.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConfectioneryContracts.BindingModels
+{
+    public class MailConfigBindingModel
+    {
+        public string MailLogin { get; set; } = string.Empty;
+        public string MailPassword { get; set; } = string.Empty;
+        public string SmtpClientHost { get; set; } = string.Empty;
+        public int SmtpClientPort { get; set; }
+        public string PopHost { get; set; } = string.Empty;
+        public int PopPort { get; set; }
+    }
+}

Confectionery/ConfectioneryContracts/BindingModels/MailSendInfoBindingModel.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConfectioneryContracts.BindingModels
+{
+    public class MailSendInfoBindingModel
+    {
+        public string MailAddress { get; set; } = string.Empty;
+        public string Subject { get; set; } = string.Empty;
+        public string Text { get; set; } = string.Empty;
+    }
+}

Confectionery/ConfectioneryContracts/BindingModels/MessageInfoBindingModel.cs

@@ -0,0 +1,24 @@
+using ConfectioneryDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConfectioneryContracts.BindingModels
+{
+    public class MessageInfoBindingModel : IMessageInfoModel
+    {
+        public string MessageId { get; set; } = string.Empty;
+
+        public int? ClientId { get; set; }
+
+        public string SenderName { get; set; } = string.Empty;
+
+        public DateTime DateDelivery { get; set; }
+
+        public string Subject { get; set; } = string.Empty;
+
+        public string Body { get; set; } = string.Empty;
+    }
+}

Confectionery/ConfectioneryContracts/BusinessLogicsContracts/IMessageInfoLogic.cs

@@ -0,0 +1,17 @@
+using ConfectioneryContracts.BindingModels;
+using ConfectioneryContracts.SearchModels;
+using ConfectioneryContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConfectioneryContracts.BusinessLogicsContracts
+{
+    public interface IMessageInfoLogic
+    {
+        List<MessageInfoViewModel>? ReadList(MessageInfoSearchModel? model);
+        bool Create(MessageInfoBindingModel model);
+    }
+}

Confectionery/ConfectioneryContracts/SearchModels/MessageInfoSearchModel.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConfectioneryContracts.SearchModels
+{
+    public class MessageInfoSearchModel
+    {
+        public int? ClientId { get; set; }
+
+        public string? MessageId { get; set; }
+    }
+}

Confectionery/ConfectioneryContracts/StoragesContracts/IMessageInfoStorage.cs

@@ -0,0 +1,19 @@
+using ConfectioneryContracts.BindingModels;
+using ConfectioneryContracts.SearchModels;
+using ConfectioneryContracts.ViewModels;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConfectioneryContracts.StoragesContracts
+{
+    public interface IMessageInfoStorage
+    {
+        List<MessageInfoViewModel> GetFullList();
+        List<MessageInfoViewModel> GetFilteredList(MessageInfoSearchModel model);
+        MessageInfoViewModel? GetElement(MessageInfoSearchModel model);
+        MessageInfoViewModel? Insert(MessageInfoBindingModel model);
+    }
+}

Confectionery/ConfectioneryContracts/ViewModels/MessageInfoViewModel.cs

@@ -0,0 +1,29 @@
+using ConfectioneryDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConfectioneryContracts.ViewModels
+{
+    public class MessageInfoViewModel : IMessageInfoModel
+    {
+        public string MessageId { get; set; } = string.Empty;
+
+        public int? ClientId { get; set; }
+
+        [DisplayName("Отправитель")]
+        public string SenderName { get; set; } = string.Empty;
+
+        [DisplayName("Дата письма")]
+        public DateTime DateDelivery { get; set; }
+
+        [DisplayName("Заголовок")]
+        public string Subject { get; set; } = string.Empty;
+
+        [DisplayName("Текст")]
+        public string Body { get; set; } = string.Empty;
+    }
+}

Confectionery/ConfectioneryDataModels/Models/IMessageInfoModel.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConfectioneryDataModels.Models
+{
+    public interface IMessageInfoModel
+    {
+        string MessageId { get; }
+        int? ClientId { get; }
+        string SenderName { get; }
+        DateTime DateDelivery { get; }
+        string Subject { get; }
+        string Body { get; }
+    }
+}

Confectionery/ConfectioneryDatabaseImplement/ConfectioneryDatabase.cs

@@ -30,5 +30,6 @@ namespace ConfectioneryDatabaseImplement
         public virtual DbSet<PastryComponent> PastryComponents { set; get; }
         public virtual DbSet<Implementer> Implementers { set; get; }
         public virtual DbSet<Order> Orders { set; get; }
+        public virtual DbSet<Message> Messages { set; get; }
     }
 }

Confectionery/ConfectioneryDatabaseImplement/Implements/MessageInfoStorage.cs

@@ -0,0 +1,56 @@
+using ConfectioneryContracts.BindingModels;
+using ConfectioneryContracts.SearchModels;
+using ConfectioneryContracts.StoragesContracts;
+using ConfectioneryContracts.ViewModels;
+using ConfectioneryDatabaseImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConfectioneryDatabaseImplement.Implements
+{
+    public class MessageInfoStorage : IMessageInfoStorage
+    {
+        public MessageInfoViewModel? GetElement(MessageInfoSearchModel model)
+        {
+            using var context = new ConfectioneryDatabase();
+            if (model.MessageId != null)
+            {
+                return context.Messages.FirstOrDefault(x => x.MessageId == model.MessageId)?.GetViewModel;
+            }
+            return null;
+        }
+
+        public List<MessageInfoViewModel> GetFilteredList(MessageInfoSearchModel model)
+        {
+            using var context = new ConfectioneryDatabase();
+            return context.Messages
+                .Where(x => x.ClientId == model.ClientId)
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public List<MessageInfoViewModel> GetFullList()
+        {
+            using var context = new ConfectioneryDatabase();
+            return context.Messages
+                .Select(x => x.GetViewModel)
+                .ToList();
+        }
+
+        public MessageInfoViewModel? Insert(MessageInfoBindingModel model)
+        {
+            using var context = new ConfectioneryDatabase();
+            var newMessage = Message.Create(model);
+            if (newMessage == null || context.Messages.Any(x => x.MessageId.Equals(model.MessageId)))
+            {
+                return null;
+            }
+            context.Messages.Add(newMessage);
+            context.SaveChanges();
+            return newMessage.GetViewModel;
+        }
+    }
+}

Confectionery/ConfectioneryDatabaseImplement/Migrations/20230504163732_migr6.Designer.cs

@@ -0,0 +1,296 @@
+// <auto-generated />
+using System;
+using ConfectioneryDatabaseImplement;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
+
+#nullable disable
+
+namespace ConfectioneryDatabaseImplement.Migrations
+{
+    [DbContext(typeof(ConfectioneryDatabase))]
+    [Migration("20230504163732_migr6")]
+    partial class migr6
+    {
+        /// <inheritdoc />
+        protected override void BuildTargetModel(ModelBuilder modelBuilder)
+        {
+#pragma warning disable 612, 618
+            modelBuilder
+                .HasAnnotation("ProductVersion", "7.0.3")
+                .HasAnnotation("Relational:MaxIdentifierLength", 63);
+
+            NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
+
+            modelBuilder.Entity("ConfectioneryDatabaseImplement.Models.Client", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ClientFIO")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Email")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Password")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Clients");
+                });
+
+            modelBuilder.Entity("ConfectioneryDatabaseImplement.Models.Component", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ComponentName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("Cost")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Components");
+                });
+
+            modelBuilder.Entity("ConfectioneryDatabaseImplement.Models.Implementer", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("ImplementerFIO")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Password")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int>("Qualification")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("WorkExperience")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Implementers");
+                });
+
+            modelBuilder.Entity("ConfectioneryDatabaseImplement.Models.Message", b =>
+                {
+                    b.Property<string>("MessageId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Body")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int?>("ClientId")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("DateDelivery")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("SenderName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Subject")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("MessageId");
+
+                    b.HasIndex("ClientId");
+
+                    b.ToTable("Messages");
+                });
+
+            modelBuilder.Entity("ConfectioneryDatabaseImplement.Models.Order", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ClientId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("DateCreate")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<DateTime?>("DateImplement")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<int?>("ImplementerId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("PastryId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Status")
+                        .HasColumnType("integer");
+
+                    b.Property<double>("Sum")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ClientId");
+
+                    b.HasIndex("ImplementerId");
+
+                    b.HasIndex("PastryId");
+
+                    b.ToTable("Orders");
+                });
+
+            modelBuilder.Entity("ConfectioneryDatabaseImplement.Models.Pastry", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<string>("PastryName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<double>("Price")
+                        .HasColumnType("double precision");
+
+                    b.HasKey("Id");
+
+                    b.ToTable("Pastries");
+                });
+
+            modelBuilder.Entity("ConfectioneryDatabaseImplement.Models.PastryComponent", b =>
+                {
+                    b.Property<int>("Id")
+                        .ValueGeneratedOnAdd()
+                        .HasColumnType("integer");
+
+                    NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
+
+                    b.Property<int>("ComponentId")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("Count")
+                        .HasColumnType("integer");
+
+                    b.Property<int>("PastryId")
+                        .HasColumnType("integer");
+
+                    b.HasKey("Id");
+
+                    b.HasIndex("ComponentId");
+
+                    b.HasIndex("PastryId");
+
+                    b.ToTable("PastryComponents");
+                });
+
+            modelBuilder.Entity("ConfectioneryDatabaseImplement.Models.Message", b =>
+                {
+                    b.HasOne("ConfectioneryDatabaseImplement.Models.Client", "Client")
+                        .WithMany()
+                        .HasForeignKey("ClientId");
+
+                    b.Navigation("Client");
+                });
+
+            modelBuilder.Entity("ConfectioneryDatabaseImplement.Models.Order", b =>
+                {
+                    b.HasOne("ConfectioneryDatabaseImplement.Models.Client", "Client")
+                        .WithMany("Orders")
+                        .HasForeignKey("ClientId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("ConfectioneryDatabaseImplement.Models.Implementer", "Implementer")
+                        .WithMany("Orders")
+                        .HasForeignKey("ImplementerId");
+
+                    b.HasOne("ConfectioneryDatabaseImplement.Models.Pastry", "Pastry")
+                        .WithMany("Orders")
+                        .HasForeignKey("PastryId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Client");
+
+                    b.Navigation("Implementer");
+
+                    b.Navigation("Pastry");
+                });
+
+            modelBuilder.Entity("ConfectioneryDatabaseImplement.Models.PastryComponent", b =>
+                {
+                    b.HasOne("ConfectioneryDatabaseImplement.Models.Component", "Component")
+                        .WithMany("PastryComponents")
+                        .HasForeignKey("ComponentId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.HasOne("ConfectioneryDatabaseImplement.Models.Pastry", "Pastry")
+                        .WithMany("Components")
+                        .HasForeignKey("PastryId")
+                        .OnDelete(DeleteBehavior.Cascade)
+                        .IsRequired();
+
+                    b.Navigation("Component");
+
+                    b.Navigation("Pastry");
+                });
+
+            modelBuilder.Entity("ConfectioneryDatabaseImplement.Models.Client", b =>
+                {
+                    b.Navigation("Orders");
+                });
+
+            modelBuilder.Entity("ConfectioneryDatabaseImplement.Models.Component", b =>
+                {
+                    b.Navigation("PastryComponents");
+                });
+
+            modelBuilder.Entity("ConfectioneryDatabaseImplement.Models.Implementer", b =>
+                {
+                    b.Navigation("Orders");
+                });
+
+            modelBuilder.Entity("ConfectioneryDatabaseImplement.Models.Pastry", b =>
+                {
+                    b.Navigation("Components");
+
+                    b.Navigation("Orders");
+                });
+#pragma warning restore 612, 618
+        }
+    }
+}

Confectionery/ConfectioneryDatabaseImplement/Migrations/20230504163732_migr6.cs

@@ -0,0 +1,48 @@
+using System;
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace ConfectioneryDatabaseImplement.Migrations
+{
+    /// <inheritdoc />
+    public partial class migr6 : Migration
+    {
+        /// <inheritdoc />
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.CreateTable(
+                name: "Messages",
+                columns: table => new
+                {
+                    MessageId = table.Column<string>(type: "text", nullable: false),
+                    ClientId = table.Column<int>(type: "integer", nullable: true),
+                    SenderName = table.Column<string>(type: "text", nullable: false),
+                    DateDelivery = table.Column<DateTime>(type: "timestamp with time zone", nullable: false),
+                    Subject = table.Column<string>(type: "text", nullable: false),
+                    Body = table.Column<string>(type: "text", nullable: false)
+                },
+                constraints: table =>
+                {
+                    table.PrimaryKey("PK_Messages", x => x.MessageId);
+                    table.ForeignKey(
+                        name: "FK_Messages_Clients_ClientId",
+                        column: x => x.ClientId,
+                        principalTable: "Clients",
+                        principalColumn: "Id");
+                });
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Messages_ClientId",
+                table: "Messages",
+                column: "ClientId");
+        }
+
+        /// <inheritdoc />
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            migrationBuilder.DropTable(
+                name: "Messages");
+        }
+    }
+}

Confectionery/ConfectioneryDatabaseImplement/Migrations/ConfectioneryDatabaseModelSnapshot.cs

@@ -94,6 +94,36 @@ namespace ConfectioneryDatabaseImplement.Migrations
                     b.ToTable("Implementers");
                 });
 
+            modelBuilder.Entity("ConfectioneryDatabaseImplement.Models.Message", b =>
+                {
+                    b.Property<string>("MessageId")
+                        .HasColumnType("text");
+
+                    b.Property<string>("Body")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<int?>("ClientId")
+                        .HasColumnType("integer");
+
+                    b.Property<DateTime>("DateDelivery")
+                        .HasColumnType("timestamp with time zone");
+
+                    b.Property<string>("SenderName")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.Property<string>("Subject")
+                        .IsRequired()
+                        .HasColumnType("text");
+
+                    b.HasKey("MessageId");
+
+                    b.HasIndex("ClientId");
+
+                    b.ToTable("Messages");
+                });
+
             modelBuilder.Entity("ConfectioneryDatabaseImplement.Models.Order", b =>
                 {
                     b.Property<int>("Id")
@@ -183,6 +213,15 @@ namespace ConfectioneryDatabaseImplement.Migrations
                     b.ToTable("PastryComponents");
                 });
 
+            modelBuilder.Entity("ConfectioneryDatabaseImplement.Models.Message", b =>
+                {
+                    b.HasOne("ConfectioneryDatabaseImplement.Models.Client", "Client")
+                        .WithMany()
+                        .HasForeignKey("ClientId");
+
+                    b.Navigation("Client");
+                });
+
             modelBuilder.Entity("ConfectioneryDatabaseImplement.Models.Order", b =>
                 {
                     b.HasOne("ConfectioneryDatabaseImplement.Models.Client", "Client")

Confectionery/ConfectioneryDatabaseImplement/Models/Message.cs

@@ -0,0 +1,57 @@
+using ConfectioneryContracts.BindingModels;
+using ConfectioneryContracts.ViewModels;
+using ConfectioneryDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConfectioneryDatabaseImplement.Models
+{
+    public class Message : IMessageInfoModel
+    {
+        [Key]
+        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.SpecifyKind(DateTime.Now, DateTimeKind.Utc);
+
+        public string Subject { get; private set; } = string.Empty;
+
+        public string Body { get; private set; } = string.Empty;
+
+        public Client? Client { get; private set; }
+
+        public static Message? 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 = DateTime.SpecifyKind(model.DateDelivery, DateTimeKind.Utc),
+            };
+        }
+
+        public MessageInfoViewModel GetViewModel => new()
+        {
+            Body = Body,
+            Subject = Subject,
+            ClientId = ClientId,
+            MessageId = MessageId,
+            SenderName = SenderName,
+            DateDelivery = DateDelivery,
+        };
+    }
+}

Confectionery/ConfectioneryFileImplement/DataFileSingleton.cs

@@ -15,10 +15,16 @@ namespace ConfectioneryFileImplement
         private readonly string OrderFileName = "Order.xml";
         private readonly string PastryFileName = "Pastry.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<Pastry> Pastries { get; private set; }
         public List<Client> Clients { get; private set; }
+        public List<Implementer> Implementers { get; private set; }
+        public List<Message> Messages { get; private set; }
+
 
         public static DataFileSingleton GetInstance()
         {
@@ -32,6 +38,8 @@ namespace ConfectioneryFileImplement
         public void SavePastries() => SaveData(Pastries, PastryFileName, "Pastries", x => x.GetXElement);
         public void SaveOrders() => SaveData(Orders, OrderFileName, "Orders", x => x.GetXElement);
         public void SaveClients() => SaveData(Clients, OrderFileName, "Clients", x => x.GetXElement);
+        public void SaveImplementers() => SaveData(Orders, ImplementerFileName, "Implementers", x => x.GetXElement);
+        public void SaveMessages() => SaveData(Orders, MessageInfoFileName, "Messages", x => x.GetXElement);
 
         private DataFileSingleton()
         {
@@ -39,6 +47,8 @@ namespace ConfectioneryFileImplement
             Pastries = LoadData(PastryFileName, "Pastry", x => Pastry.Create(x)!)!;
             Orders = LoadData(OrderFileName, "Order", x => Order.Create(x)!)!;
             Clients = LoadData(ClientFileName, "Client", x => Client.Create(x)!)!;
+            Implementers = LoadData(ImplementerFileName, "Implementer", x => Implementer.Create(x)!)!;
+            Messages = LoadData(MessageInfoFileName, "MessageInfo", x => Message.Create(x)!)!;
         }
         private static List<T>? LoadData<T>(string filename, string xmlNodeName, Func<XElement, T> selectFunction)
         {

Confectionery/ConfectioneryFileImplement/Implements/ImplementerStorage.cs

@@ -0,0 +1,96 @@
+using ConfectioneryContracts.BindingModels;
+using ConfectioneryContracts.SearchModels;
+using ConfectioneryContracts.StoragesContracts;
+using ConfectioneryContracts.ViewModels;
+using ConfectioneryFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConfectioneryFileImplement.Implements
+{
+    public class ImplementerStorage : IImplementerStorage
+    {
+        private readonly DataFileSingleton _source;
+        public ImplementerStorage()
+        {
+            _source = DataFileSingleton.GetInstance();
+        }
+
+        public ImplementerViewModel? Delete(ImplementerBindingModel model)
+        {
+            var res = _source.Implementers.FirstOrDefault(x => x.Id == model.Id);
+            if (res != null)
+            {
+                _source.Implementers.Remove(res);
+                _source.SaveImplementers();
+            }
+            return res?.GetViewModel;
+        }
+
+        public ImplementerViewModel? GetElement(ImplementerSearchModel model)
+        {
+            if (model.Id.HasValue)
+                return _source.Implementers.FirstOrDefault(x => x.Id == model.Id)?.GetViewModel;
+            if (model.ImplementerFIO != null && model.Password != null)
+                return _source.Implementers
+                    .FirstOrDefault(x => x.ImplementerFIO.Equals(model.ImplementerFIO)
+                                      && x.Password.Equals(model.Password))
+                    ?.GetViewModel;
+            if (model.ImplementerFIO != null)
+                return _source.Implementers.FirstOrDefault(x => x.ImplementerFIO.Equals(model.ImplementerFIO))?.GetViewModel;
+            return null;
+        }
+
+        public List<ImplementerViewModel> GetFilteredList(ImplementerSearchModel model)
+        {
+            if (model == null)
+            {
+                return new();
+            }
+            if (model.Id.HasValue)
+            {
+                var res = GetElement(model);
+                return res != null ? new() { res } : new();
+            }
+            if (model.ImplementerFIO != null) // На случай если фио не будет уникальным (по заданию оно уникально)
+            {
+                return _source.Implementers
+                    .Where(x => x.ImplementerFIO.Equals(model.ImplementerFIO))
+                    .Select(x => x.GetViewModel)
+                    .ToList();
+            }
+            return new();
+        }
+
+        public List<ImplementerViewModel> GetFullList()
+        {
+            return _source.Implementers.Select(x => x.GetViewModel).ToList();
+        }
+
+        public ImplementerViewModel? Insert(ImplementerBindingModel model)
+        {
+            model.Id = _source.Implementers.Count > 0 ? _source.Implementers.Max(x => x.Id) + 1 : 1;
+            var res = Implementer.Create(model);
+            if (res != null)
+            {
+                _source.Implementers.Add(res);
+                _source.SaveImplementers();
+            }
+            return res?.GetViewModel;
+        }
+
+        public ImplementerViewModel? Update(ImplementerBindingModel model)
+        {
+            var res = _source.Implementers.FirstOrDefault(x => x.Id == model.Id);
+            if (res != null)
+            {
+                res.Update(model);
+                _source.SaveImplementers();
+            }
+            return res?.GetViewModel;
+        }
+    }
+}

Confectionery/ConfectioneryFileImplement/Implements/MessageInfoStorage.cs

@@ -0,0 +1,58 @@
+using ConfectioneryContracts.BindingModels;
+using ConfectioneryContracts.SearchModels;
+using ConfectioneryContracts.StoragesContracts;
+using ConfectioneryContracts.ViewModels;
+using ConfectioneryFileImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConfectioneryFileImplement.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 = Message.Create(model);
+            if (newMessage == null)
+            {
+                return null;
+            }
+            _source.Messages.Add(newMessage);
+            _source.SaveMessages();
+            return newMessage.GetViewModel;
+        }
+    }
+}

Confectionery/ConfectioneryFileImplement/Models/Implementer.cs

@@ -0,0 +1,85 @@
+using ConfectioneryContracts.BindingModels;
+using ConfectioneryContracts.ViewModels;
+using ConfectioneryDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace ConfectioneryFileImplement.Models
+{
+    public class Implementer : IImplementerModel
+    {
+        public int Id { get; private set; }
+
+        public string ImplementerFIO { get; private set; } = string.Empty;
+
+        public string Password { get; private set; } = string.Empty;
+
+        public int WorkExperience { get; private set; }
+
+        public int Qualification { get; private set; }
+
+        public static Implementer? Create(XElement element)
+        {
+            if (element == null)
+            {
+                return null;
+            }
+            return new()
+            {
+                ImplementerFIO = element.Element("FIO")!.Value,
+                Password = element.Element("Password")!.Value,
+                Id = Convert.ToInt32(element.Attribute("Id")!.Value),
+                Qualification = Convert.ToInt32(element.Element("Qualification")!.Value),
+                WorkExperience = Convert.ToInt32(element.Element("WorkExperience")!.Value),
+            };
+        }
+
+        public static Implementer? Create(ImplementerBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new()
+            {
+                Id = model.Id,
+                Password = model.Password,
+                Qualification = model.Qualification,
+                ImplementerFIO = model.ImplementerFIO,
+                WorkExperience = model.WorkExperience,
+            };
+        }
+
+        public void Update(ImplementerBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Password = model.Password;
+            Qualification = model.Qualification;
+            ImplementerFIO = model.ImplementerFIO;
+            WorkExperience = model.WorkExperience;
+        }
+
+        public ImplementerViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Password = Password,
+            Qualification = Qualification,
+            ImplementerFIO = ImplementerFIO,
+        };
+
+        public XElement GetXElement => new("Client",
+            new XAttribute("Id", Id),
+            new XElement("Password", Password),
+            new XElement("FIO", ImplementerFIO),
+            new XElement("Qualification", Qualification),
+            new XElement("WorkExperience", WorkExperience)
+            );
+    }
+}

Confectionery/ConfectioneryFileImplement/Models/Message.cs

@@ -0,0 +1,80 @@
+using ConfectioneryContracts.BindingModels;
+using ConfectioneryContracts.ViewModels;
+using ConfectioneryDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace ConfectioneryFileImplement.Models
+{
+    public class Message : 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.SpecifyKind(DateTime.Now, DateTimeKind.Utc);
+
+        public string Subject { get; private set; } = string.Empty;
+
+        public string Body { get; private set; } = string.Empty;
+
+        public static Message? 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 = DateTime.SpecifyKind(model.DateDelivery, DateTimeKind.Utc),
+            };
+        }
+
+        public static Message? 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)
+            );
+    }
+}

Confectionery/ConfectioneryListImplement/DataListSingleton.cs

@@ -19,6 +19,9 @@ namespace ConfectioneryListImplement
 
         public List<Client> Clients { get; set; }
 
+        public List<Implementer> Implementers { get; set; }
+        public List<Message> Messages { get; set; }
+
         private DataListSingleton()
         {
             Components = new List<Component>();

Confectionery/ConfectioneryListImplement/Implements/ImplementerStorage.cs

@@ -0,0 +1,119 @@
+using ConfectioneryContracts.BindingModels;
+using ConfectioneryContracts.SearchModels;
+using ConfectioneryContracts.StoragesContracts;
+using ConfectioneryContracts.ViewModels;
+using ConfectioneryListImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConfectioneryListImplement.Implements
+{
+    public class ImplementerStorage : IImplementerStorage
+    {
+        private readonly DataListSingleton _source;
+        public ImplementerStorage()
+        {
+            _source = DataListSingleton.GetInstance();
+        }
+
+        public ImplementerViewModel? Delete(ImplementerBindingModel model)
+        {
+            for (int i = 0; i < _source.Implementers.Count; ++i)
+            {
+                if (_source.Implementers[i].Id == model.Id)
+                {
+                    var element = _source.Implementers[i];
+                    _source.Implementers.RemoveAt(i);
+                    return element.GetViewModel;
+                }
+            }
+            return null;
+        }
+
+        public ImplementerViewModel? GetElement(ImplementerSearchModel model)
+        {
+            foreach (var x in _source.Implementers)
+            {
+                if (model.Id.HasValue && x.Id == model.Id)
+                    return x.GetViewModel;
+                if (model.ImplementerFIO != null && model.Password != null &&
+                    x.ImplementerFIO.Equals(model.ImplementerFIO) && x.Password.Equals(model.Password))
+                    return x.GetViewModel;
+                if (model.ImplementerFIO != null && x.ImplementerFIO.Equals(model.ImplementerFIO))
+                    return x.GetViewModel;
+            }
+            return null;
+        }
+
+        public List<ImplementerViewModel> GetFilteredList(ImplementerSearchModel model)
+        {
+            if (model == null)
+            {
+                return new();
+            }
+            if (model.Id.HasValue)
+            {
+                var res = GetElement(model);
+                return res != null ? new() { res } : new();
+            }
+            // На случай если при расширении проекта фио не будет уникальным
+            // (по заданию оно уникально)
+            List<ImplementerViewModel> result = new();
+            if (model.ImplementerFIO != null)
+            {
+                foreach (var implementer in _source.Implementers)
+                {
+                    if (implementer.ImplementerFIO.Equals(model.ImplementerFIO))
+                    {
+                        result.Add(implementer.GetViewModel);
+                    }
+                }
+            }
+            return result;
+        }
+
+        public List<ImplementerViewModel> GetFullList()
+        {
+            var result = new List<ImplementerViewModel>();
+            foreach (var implementer in _source.Implementers)
+            {
+                result.Add(implementer.GetViewModel);
+            }
+            return result;
+        }
+
+        public ImplementerViewModel? Insert(ImplementerBindingModel model)
+        {
+            model.Id = 1;
+            foreach (var implementer in _source.Implementers)
+            {
+                if (model.Id <= implementer.Id)
+                {
+                    model.Id = implementer.Id + 1;
+                }
+            }
+            var res = Implementer.Create(model);
+            if (res != null)
+            {
+                _source.Implementers.Add(res);
+            }
+            return res?.GetViewModel;
+        }
+
+        public ImplementerViewModel? Update(ImplementerBindingModel model)
+        {
+            foreach (var implementer in _source.Implementers)
+            {
+                if (implementer.Id == model.Id)
+                {
+                    implementer.Update(model);
+                    return implementer.GetViewModel;
+                }
+            }
+            return null;
+        }
+    }
+}

Confectionery/ConfectioneryListImplement/Implements/MessageInfoStorage.cs

@@ -0,0 +1,66 @@
+using ConfectioneryContracts.BindingModels;
+using ConfectioneryContracts.SearchModels;
+using ConfectioneryContracts.StoragesContracts;
+using ConfectioneryContracts.ViewModels;
+using ConfectioneryListImplement.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConfectioneryListImplement.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 = Message.Create(model);
+            if (newMessage == null)
+            {
+                return null;
+            }
+            _source.Messages.Add(newMessage);
+            return newMessage.GetViewModel;
+        }
+    }
+}

Confectionery/ConfectioneryListImplement/Models/Implementer.cs

@@ -0,0 +1,60 @@
+using ConfectioneryContracts.BindingModels;
+using ConfectioneryContracts.ViewModels;
+using ConfectioneryDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConfectioneryListImplement.Models
+{
+    public class Implementer : IImplementerModel
+    {
+        public int Id { get; private set; }
+
+        public string ImplementerFIO { get; private set; } = string.Empty;
+
+        public string Password { get; private set; } = string.Empty;
+
+        public int WorkExperience { get; private set; }
+
+        public int Qualification { get; private set; }
+
+        public static Implementer? Create(ImplementerBindingModel model)
+        {
+            if (model == null)
+            {
+                return null;
+            }
+            return new()
+            {
+                Id = model.Id,
+                Password = model.Password,
+                Qualification = model.Qualification,
+                ImplementerFIO = model.ImplementerFIO,
+                WorkExperience = model.WorkExperience,
+            };
+        }
+
+        public void Update(ImplementerBindingModel model)
+        {
+            if (model == null)
+            {
+                return;
+            }
+            Password = model.Password;
+            Qualification = model.Qualification;
+            ImplementerFIO = model.ImplementerFIO;
+            WorkExperience = model.WorkExperience;
+        }
+
+        public ImplementerViewModel GetViewModel => new()
+        {
+            Id = Id,
+            Password = Password,
+            Qualification = Qualification,
+            ImplementerFIO = ImplementerFIO,
+        };
+    }
+}

Confectionery/ConfectioneryListImplement/Models/Message.cs

@@ -0,0 +1,53 @@
+using ConfectioneryContracts.BindingModels;
+using ConfectioneryContracts.ViewModels;
+using ConfectioneryDataModels.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace ConfectioneryListImplement.Models
+{
+    public class Message : 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.SpecifyKind(DateTime.Now, DateTimeKind.Utc);
+
+        public string Subject { get; private set; } = string.Empty;
+
+        public string Body { get; private set; } = string.Empty;
+
+        public static Message? 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,
+        };
+    }
+}

Confectionery/ConfectioneryRestApi/Controllers/ClientController.cs

@@ -14,10 +14,13 @@ namespace ConfectioneryRestApi.Controllers
 
         private readonly IClientLogic _logic;
 
-        public ClientController(IClientLogic logic, ILogger<ClientController> logger)
+        private readonly IMessageInfoLogic _mailLogic;
+
+        public ClientController(IClientLogic logic, ILogger<ClientController> logger, IMessageInfoLogic mailLogic)
         {
             _logger = logger;
             _logic = logic;
+            _mailLogic = mailLogic;
         }
 
         [HttpGet]
@@ -66,5 +69,22 @@ namespace ConfectioneryRestApi.Controllers
                 throw;
             }
         }
+
+        [HttpGet]
+        public List<MessageInfoViewModel>? GetMessages(int clientId)
+        {
+            try
+            {
+                return _mailLogic.ReadList(new MessageInfoSearchModel
+                {
+                    ClientId = clientId
+                });
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Ошибка получения писем клиента");
+                throw;
+            }
+        }  
     }
 }

Confectionery/ConfectioneryRestApi/Program.cs

@@ -1,4 +1,6 @@
 using ConfectioneryBusinessLogic.BusinessLogics;
+using ConfectioneryBusinessLogic.MailWorker;
+using ConfectioneryContracts.BindingModels;
 using ConfectioneryContracts.BusinessLogicsContracts;
 using ConfectioneryContracts.StoragesContracts;
 using ConfectioneryDatabaseImplement.Implements;
@@ -16,11 +18,17 @@ builder.Services.AddTransient<IClientStorage, ClientStorage>();
 builder.Services.AddTransient<IImplementerStorage, ImplementerStorage>();
 builder.Services.AddTransient<IOrderStorage, OrderStorage>();
 builder.Services.AddTransient<IPastryStorage, PastryStorage>();
+builder.Services.AddTransient<IMessageInfoStorage, MessageInfoStorage>();
+
 
 builder.Services.AddTransient<IOrderLogic, OrderLogic>();
 builder.Services.AddTransient<IImplementerLogic, ImplementerLogic>();
 builder.Services.AddTransient<IClientLogic, ClientLogic>();
 builder.Services.AddTransient<IPastryLogic, PastryLogic>();
+builder.Services.AddTransient<IImplementerLogic, ImplementerLogic>();
+builder.Services.AddTransient<IMessageInfoLogic, MessageInfoLogic>();
+
+builder.Services.AddSingleton<AbstractMailWorker, MailKitWorker>();
 
 builder.Services.AddControllers();
 // Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
@@ -35,6 +43,16 @@ builder.Services.AddSwaggerGen(c =>
 });
 
 var app = builder.Build();
+var mailSender = app.Services.GetService<AbstractMailWorker>();
+mailSender?.MailConfig(new MailConfigBindingModel
+{
+    MailLogin = builder.Configuration?.GetSection("MailLogin")?.Value?.ToString() ?? string.Empty,
+    MailPassword = builder.Configuration?.GetSection("MailPassword")?.Value?.ToString() ?? string.Empty,
+    SmtpClientHost = builder.Configuration?.GetSection("SmtpClientHost")?.Value?.ToString() ?? string.Empty,
+    SmtpClientPort = Convert.ToInt32(builder.Configuration?.GetSection("SmtpClientPort")?.Value?.ToString()),
+    PopHost = builder.Configuration?.GetSection("PopHost")?.Value?.ToString() ?? string.Empty,
+    PopPort = Convert.ToInt32(builder.Configuration?.GetSection("PopPort")?.Value?.ToString())
+});
 
 // Configure the HTTP request pipeline.
 if (app.Environment.IsDevelopment())

Confectionery/ConfectioneryRestApi/appsettings.json

@@ -5,5 +5,12 @@
       "Microsoft.AspNetCore": "Warning"
     }
   },
-  "AllowedHosts": "*"
+  "AllowedHosts": "*",
+
+  "SmtpClientHost": "smtp.gmail.com",
+  "SmtpClientPort": "587",
+  "PopHost": "pop.gmail.com",
+  "PopPort": "995",
+  "MailLogin": "rpplabs098@gmail.com",
+  "MailPassword": "sxwf ohjr cgba wext"
 }

Confectionery/ConfectioneryView/App.config

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+	<appSettings>
+		<add key="SmtpClientHost" value="smtp.gmail.com" />
+		<add key="SmtpClientPort" value="587" />
+		<add key="PopHost" value="pop.gmail.com" />
+		<add key="PopPort" value="995" />
+		<add key="MailLogin" value="rpplabs098@gmail.com" />
+		<add key="MailPassword" value="sxwf ohjr cgba wext" />
+	</appSettings>
+</configuration>

Confectionery/ConfectioneryView/ConfectioneryView.csproj

@@ -28,6 +28,9 @@
   </ItemGroup>
 
   <ItemGroup>
+    <None Update="App.config">
+      <CopyToOutputDirectory>Always</CopyToOutputDirectory>
+    </None>
     <None Update="ReportOrders.rdlc">
       <CopyToOutputDirectory>Always</CopyToOutputDirectory>
     </None>

Confectionery/ConfectioneryView/FormMails.Designer.cs

@@ -0,0 +1,62 @@
+namespace ConfectioneryView
+{
+	partial class FormMails
+	{
+		/// <summary>
+		/// Required designer variable.
+		/// </summary>
+		private System.ComponentModel.IContainer components = null;
+
+		/// <summary>
+		/// Clean up any resources being used.
+		/// </summary>
+		/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+		protected override void Dispose(bool disposing)
+		{
+			if (disposing && (components != null))
+			{
+				components.Dispose();
+			}
+			base.Dispose(disposing);
+		}
+
+		#region Windows Form Designer generated code
+
+		/// <summary>
+		/// Required method for Designer support - do not modify
+		/// the contents of this method with the code editor.
+		/// </summary>
+		private void InitializeComponent()
+		{
+            this.dataGridView = new System.Windows.Forms.DataGridView();
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).BeginInit();
+            this.SuspendLayout();
+            // 
+            // dataGridView
+            // 
+            this.dataGridView.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
+            this.dataGridView.Location = new System.Drawing.Point(1, 0);
+            this.dataGridView.Name = "dataGridView";
+            this.dataGridView.RowTemplate.Height = 25;
+            this.dataGridView.Size = new System.Drawing.Size(801, 449);
+            this.dataGridView.TabIndex = 0;
+            // 
+            // FormMails
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(800, 450);
+            this.Controls.Add(this.dataGridView);
+            this.Name = "FormMails";
+            this.Text = "Письма";
+            this.Load += new System.EventHandler(this.FormViewMail_Load);
+            ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).EndInit();
+            this.ResumeLayout(false);
+
+		}
+
+		#endregion
+
+		private DataGridView dataGridView;
+	}
+}

Confectionery/ConfectioneryView/FormMails.cs

@@ -0,0 +1,49 @@
+using ConfectioneryContracts.BusinessLogicsContracts;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace ConfectioneryView
+{
+	public partial class FormMails : Form
+	{
+        private readonly ILogger _logger;
+        private readonly IMessageInfoLogic _logic;
+
+        public FormMails(ILogger<FormMails> logger, IMessageInfoLogic logic)
+        {
+            InitializeComponent();
+            _logger = logger;
+            _logic = logic;
+        }
+
+        private void FormViewMail_Load(object sender, EventArgs e)
+        {
+            try
+            {
+                var list = _logic.ReadList(null);
+                if (list != null)
+                {
+                    dataGridView.DataSource = list;
+                    dataGridView.Columns["ClientId"].Visible = false;
+                    dataGridView.Columns["MessageId"].Visible = false;
+                    dataGridView.Columns["Body"].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
+                }
+                _logger.LogInformation("Загрузка списка писем");
+            }
+            catch (Exception ex)
+            {
+                _logger.LogError(ex, "Ошибка загрузки писем");
+                MessageBox.Show(ex.Message, "Ошибка", MessageBoxButtons.OK,
+                MessageBoxIcon.Error);
+            }
+        }
+    }
+}

Confectionery/ConfectioneryView/FormMails.resx

@@ -0,0 +1,60 @@
+<root>
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

Confectionery/ConfectioneryView/FormMain.Designer.cs

@@ -45,6 +45,7 @@
             this.компонентыПоИзделиямToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
             this.списокЗаказовToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
             this.запускРаботыToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
+            this.письмаToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
             ((System.ComponentModel.ISupportInitialize)(this.dataGridView)).BeginInit();
             this.menuStrip1.SuspendLayout();
             this.SuspendLayout();
@@ -113,7 +114,8 @@
             this.menuStrip1.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
             this.справочникиToolStripMenuItem,
             this.отчётыToolStripMenuItem,
-            this.запускРаботыToolStripMenuItem});
+            this.запускРаботыToolStripMenuItem,
+            this.письмаToolStripMenuItem});
             this.menuStrip1.Location = new System.Drawing.Point(0, 0);
             this.menuStrip1.Name = "menuStrip1";
             this.menuStrip1.Size = new System.Drawing.Size(800, 24);
@@ -197,6 +199,13 @@
             this.запускРаботыToolStripMenuItem.Text = "Запуск работы";
             this.запускРаботыToolStripMenuItem.Click += new System.EventHandler(this.DoWorkToolStripMenuItem_Click);
             // 
+            // письмаToolStripMenuItem
+            // 
+            this.письмаToolStripMenuItem.Name = "письмаToolStripMenuItem";
+            this.письмаToolStripMenuItem.Size = new System.Drawing.Size(62, 20);
+            this.письмаToolStripMenuItem.Text = "Письма";
+            this.письмаToolStripMenuItem.Click += new System.EventHandler(this.MailToolStripMenuItem_Click);
+            // 
             // FormMain
             // 
             this.AutoScaleDimensions = new System.Drawing.SizeF(7F, 15F);
@@ -240,5 +249,6 @@
         private ToolStripMenuItem клиентыToolStripMenuItem;
         private ToolStripMenuItem исполнителиToolStripMenuItem;
         private ToolStripMenuItem запускРаботыToolStripMenuItem;
+        private ToolStripMenuItem письмаToolStripMenuItem;
     }
 }

Confectionery/ConfectioneryView/FormMain.cs

@@ -246,5 +246,14 @@ e)
         {
             LoadData();
         }
+
+        private void MailToolStripMenuItem_Click(object sender, EventArgs e)
+        {
+            var service = Program.ServiceProvider?.GetService(typeof(FormMails));
+            if (service is FormMails form)
+            {
+                form.ShowDialog();
+            }
+        }
     }
 }

Confectionery/ConfectioneryView/Program.cs

@@ -1,6 +1,8 @@
-using ConfectioneryBusinessLogic.BusinessLogics;
+using ConfectioneryBusinessLogic.BusinessLogics;
+using ConfectioneryBusinessLogic.MailWorker;
 using ConfectioneryBusinessLogic.OfficePackage;
 using ConfectioneryBusinessLogic.OfficePackage.Implements;
+using ConfectioneryContracts.BindingModels;
 using ConfectioneryContracts.BusinessLogicsContracts;
 using ConfectioneryContracts.StoragesContracts;
 using ConfectioneryDatabaseImplement.Implements;
@@ -28,6 +30,36 @@ namespace Confectionery
             var services = new ServiceCollection();
             ConfigureServices(services);
             _serviceProvider = services.BuildServiceProvider();
+
+            try
+            {
+                var mailSender = _serviceProvider.GetService<AbstractMailWorker>();
+                mailSender?.MailConfig(new MailConfigBindingModel
+                {
+                    MailLogin =
+                System.Configuration.ConfigurationManager.AppSettings["MailLogin"] ??
+                string.Empty,
+                    MailPassword =
+                System.Configuration.ConfigurationManager.AppSettings["MailPassword"] ??
+                string.Empty,
+                    SmtpClientHost =
+                System.Configuration.ConfigurationManager.AppSettings["SmtpClientHost"] ??
+                string.Empty,
+                    SmtpClientPort =
+                Convert.ToInt32(System.Configuration.ConfigurationManager.AppSettings["SmtpClientPort"]),
+                    PopHost =
+                System.Configuration.ConfigurationManager.AppSettings["PopHost"] ?? string.Empty,
+                    PopPort =
+                Convert.ToInt32(System.Configuration.ConfigurationManager.AppSettings["PopPort"])
+                });
+                // создаем таймер
+                var timer = new System.Threading.Timer(new TimerCallback(MailCheck!), null, 0, 1000);
+            }
+            catch (Exception ex)
+            {
+                var logger = _serviceProvider.GetService<ILogger>();
+            }
+
             Application.Run(_serviceProvider.GetRequiredService<FormMain>());
         }
 
@@ -41,12 +73,14 @@ namespace Confectionery
             services.AddTransient<IClientStorage, ClientStorage>();
             services.AddTransient<IComponentStorage, ComponentStorage>();
             services.AddTransient<IImplementerStorage, ImplementerStorage>();
+            services.AddTransient<IMessageInfoStorage, MessageInfoStorage>();
             services.AddTransient<IOrderStorage, OrderStorage>();
             services.AddTransient<IPastryStorage, PastryStorage>();
 
             services.AddTransient<IClientLogic, ClientLogic>();
             services.AddTransient<IComponentLogic, ComponentLogic>();
             services.AddTransient<IImplementerLogic, ImplementerLogic>();
+            services.AddTransient<IMessageInfoLogic, MessageInfoLogic>();
             services.AddTransient<IOrderLogic, OrderLogic>();
             services.AddTransient<IPastryLogic, PastryLogic>();
             services.AddTransient<IReportLogic, ReportLogic>();
@@ -55,6 +89,7 @@ namespace Confectionery
             services.AddTransient<AbstractSaveToWord, SaveToWord>();
             services.AddTransient<AbstractSaveToExcel, SaveToExcel>();
             services.AddTransient<AbstractSaveToPdf, SaveToPdf>();
+            services.AddSingleton<AbstractMailWorker, MailKitWorker>();
 
             services.AddTransient<FormMain>();
             services.AddTransient<FormComponent>();
@@ -68,6 +103,10 @@ namespace Confectionery
             services.AddTransient<FormClients>();
             services.AddTransient<FormImplementers>();
             services.AddTransient<FormImplementer>();
-        }
+            services.AddTransient<FormMails>();
+        }
+
+        private static void MailCheck(object obj) => ServiceProvider?
+            .GetService<AbstractMailWorker>()?.MailCheck();
     }
 }