C#使用 MailKit 收发邮件

using MailKit.Net.Smtp;
   using MimeKit;
   class Program
   {
       static void Main()
       {
           var message = new MimeMessage();
           message.From.Add(new MailboxAddress("发件人名称", "发件人邮箱地址"));
           message.To.Add(new MailboxAddress("收件人名称", "收件人邮箱地址"));
           message.Subject = "邮件主题";
           var bodyBuilder = new BodyBuilder();
           bodyBuilder.TextBody = "邮件正文内容";
           message.Body = bodyBuilder.ToMessageBody();
           using (var client = new SmtpClient())
           {
               client.Connect("邮件服务器地址", 邮件服务器端口号,  是否启用 SSL);
               client.Authenticate("发件人邮箱地址", "发件人邮箱密码");
               client.Send(message);
               client.Disconnect(true);
           }
       }
   }

using MailKit;
   using MailKit.Net.Imap;
   using MimeKit;
   class Program
   {
       static void Main()
       {
           using (var client = new ImapClient())
           {
               client.Connect("邮件服务器地址", 邮件服务器端口号, 是否启用 SSL);
               client.Authenticate("收件人邮箱地址", "收件人邮箱密码");
               var inbox = client.Inbox;
               inbox.Open(FolderAccess.ReadOnly);
               for (int i = 0; i < inbox.Count; i++)
               {
                   var message = inbox.GetMessage(i);
                   Console.WriteLine("主题：" + message.Subject);
                   Console.WriteLine("发件人：" + message.From);
                   Console.WriteLine("正文：" + message.TextBody);
               }
               client.Disconnect(true);
           }
       }
   }