Добавил view модель письма

SecuritySystem/SecuritySystemContracts/ViewModels/MessageInfoViewModel.cs

@@ -0,0 +1,20 @@
+using SecuritySystemDataModels.Models;
+using System.ComponentModel;
+
+namespace SecuritySystemContracts.ViewModels
+{
+    public class MessageInfoViewModel : IMessageInfoModel
+    {
+        [DisplayName("Идентификатор")]
+        public string MessageId { get; set; } = string.Empty;
+        public int? ClientId { get; set; } = null;
+        [DisplayName("Отправитель")]
+        public string SenderName { get; set; } = string.Empty;
+        [DisplayName("Дата получения")]
+        public DateTime DateDelivery { get; set; } = DateTime.Now;
+        [DisplayName("Тема")]
+        public string Subject { get; set; } = string.Empty;
+        [DisplayName("Текст")]
+        public string Body { get; set; } = string.Empty;
+    }
+}