эх...

FlowerShopBusinessLogic/MessageInfoLogic.cs

@@ -44,5 +44,28 @@ namespace FlowerShopBusinessLogic.BusinessLogic
 			_logger.LogInformation("ReadList. Count:{Count}", list.Count);
 			return list;
 		}
+		public MessageInfoViewModel? ReadElement(MessageInfoSearchModel model)
+		{
+			_logger.LogInformation("ReadElement. MessageId:{MessageId}", model?.MessageId);
+			if (model == null)
+				throw new ArgumentNullException(nameof(model));
+			var element = _messageInfoStorage.GetElement(model);
+			if (element == null)
+			{
+				_logger.LogWarning("ReadElement element not found");
+				return null;
+			}
+			_logger.LogInformation("ReadElement find. Id:{Id}", element.MessageId);
+			return element;
+		}
+		public bool Update(MessageInfoBindingModel model)
+		{
+			if (_messageInfoStorage.Update(model) == null)
+			{
+				_logger.LogWarning("Update operation failed");
+				return false;
+			}
+			return true;
+		}
 	}
 }

FlowerShopContracts/BindingModels/MailReplySendInfoBindingModel.cs

@@ -0,0 +1,13 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FlowerShopContracts.BindingModels
+{
+	public class MailReplySendInfoBindingModel : MailSendInfoBindingModel
+	{
+		public string ParentMessageId { get; set; } = string.Empty;
+	}
+}

FlowerShopContracts/BindingModels/MessageInfoBindingModel.cs

@@ -15,5 +15,8 @@ namespace FlowerShopContracts.BindingModels
 		public string Subject { get; set; } = string.Empty;
 		public string Body { get; set; } = string.Empty;
 		public DateTime DateDelivery { get; set; }
+		public bool IsReaded { get; set; }
+		public string? ReplyMessageId { get; set; }
+		public bool IsReply { get; set; }
 	}
 }

FlowerShopContracts/BusinessLogicsContracts/IMessageInfoLogic.cs

@@ -13,6 +13,8 @@ namespace FlowerShopContracts.BusinessLogicsContracts
 	public interface IMessageInfoLogic
 	{
 		List<MessageInfoViewModel>? ReadList(MessageInfoSearchModel? model);
+		MessageInfoViewModel? ReadElement(MessageInfoSearchModel model);
 		bool Create(MessageInfoBindingModel model);
+		bool Update(MessageInfoBindingModel model);
 	}
 }

FlowerShopContracts/SearchModels/MessageInfoSearchModel.cs

@@ -10,5 +10,7 @@ namespace FlowerShopContracts.SearchModels
 	{
 		public int? ClientId { get; set; }
 		public string? MessageId { get; set; }
+		public int? PageLength { get; set; }
+		public int? PageIndex { get; set; }
 	}
 }

FlowerShopContracts/StoragesContracts/IMessageInfoStorage.cs

@@ -16,5 +16,7 @@ namespace FlowerShopContracts.StoragesContracts
 		List<MessageInfoViewModel> GetFilteredList(MessageInfoSearchModel model);
 		MessageInfoViewModel? GetElement(MessageInfoSearchModel model);
 		MessageInfoViewModel? Insert(MessageInfoBindingModel model);
+		MessageInfoViewModel? Update(MessageInfoBindingModel model);
+
 	}
 }

FlowerShopContracts/ViewModels/MessageInfoViewModel.cs

@@ -20,5 +20,10 @@ namespace FlowerShopContracts.ViewModels
 		public string Subject { get; set; } = string.Empty;
 		[DisplayName("Текст")]
 		public string Body { get; set; } = string.Empty;
+		[DisplayName("Прочитано")]
+		public bool IsReaded { get; set; }
+		public string? ReplyMessageId { get; set; }
+		public IMessageInfoModel? Reply { get; set; }
+		public bool IsReply { get; set; }
 	}
 }

FlowerShopDataModels/IMessageInfoModel.cs

@@ -14,6 +14,9 @@ namespace FlowerShopDataModels.Models
 		DateTime DateDelivery { get; }
 		string Subject { get; }
 		string Body { get; }
+		bool IsReaded { get; }
+		string? ReplyMessageId { get; }
+		bool IsReply { get; }
 
 	}
 }