初始化

FutureMailAPI/Models/ReceivedMail.cs

@@ -0,0 +1,39 @@
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace FutureMailAPI.Models
+{
+    public class ReceivedMail
+    {
+        [Key]
+        public int Id { get; set; }
+        
+        [Required]
+        public int SentMailId { get; set; }
+        
+        [Required]
+        public int RecipientId { get; set; }
+        
+        // 接收时间
+        public DateTime ReceivedAt { get; set; } = DateTime.UtcNow;
+        
+        // 是否已读
+        public bool IsRead { get; set; } = false;
+        
+        // 阅读时间
+        public DateTime? ReadAt { get; set; }
+        
+        // 是否已回复
+        public bool IsReplied { get; set; } = false;
+        
+        // 回复邮件ID
+        public int? ReplyMailId { get; set; }
+        
+        // 导航属性
+        [ForeignKey("SentMailId")]
+        public virtual SentMail SentMail { get; set; } = null!;
+        
+        [ForeignKey("RecipientId")]
+        public virtual User Recipient { get; set; } = null!;
+    }
+}