class Program

    {

        static void Main(string[] args)

        {

            if (args != null && args.Length > )

            {

                try

                {

                    inputmodel obj = new inputmodel(args);

                    System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient();

                    client.Host = obj.SmtpHost;//如使用163的SMTP服务器发送邮件："smtp.163.com";

                    client.UseDefaultCredentials = true;

                    client.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;

                    client.Credentials = new System.Net.NetworkCredential(obj.FromMail, obj.FromPwd);//账号、密码（用授权码比较安全）

                    client.Port = ;

                    System.Net.Mail.MailMessage Message = new System.Net.Mail.MailMessage();

                    Message.From = new System.Net.Mail.MailAddress(obj.FromMail);

                    foreach (var p in obj.ToMail.Split(','))

                    {

                        Message.To.Add(p);//收件人

                        Console.WriteLine(p);

                    }

                    Message.Subject = obj.Subject;//主题

                    Message.Body = obj.Body;//内容

                    Message.SubjectEncoding = System.Text.Encoding.UTF8;//主题编码

                    Message.BodyEncoding = System.Text.Encoding.UTF8;//内容编码

                    Message.Priority = System.Net.Mail.MailPriority.High;//邮件级别

                    Message.IsBodyHtml = true;

                    client.Send(Message);

                    Console.WriteLine("发送成功");

                }

                catch (Exception e)

                {

                    Console.WriteLine($"error:{e.Message}");

                }

            }

            else

            {

                Console.WriteLine("必要参数如下：");

                Console.WriteLine("-f FromMail");

                Console.WriteLine("-t ToMail");

                Console.WriteLine("-s Subject");

                Console.WriteLine("-b Body");

                Console.WriteLine("-h SmtpHost");

                Console.WriteLine("-p FromPwd");

            }

        }

        private class inputmodel

        {

            public inputmodel(string[] args)

            {

                int i = -;

                i = Array.FindIndex(args, o => o == "-f");

                if (i != -)

                {

                    this.FromMail = args[i + ];

                }

                i = Array.FindIndex(args, o => o == "-t");

                if (i != -)

                {

                    this.ToMail = args[i + ];

                }

                i = Array.FindIndex(args, o => o == "-s");

                if (i != -)

                {

                    this.Subject = args[i + ];

                }

                i = Array.FindIndex(args, o => o == "-b");

                if (i != -)

                {

                    this.Body = args[i + ];

                }

                i = Array.FindIndex(args, o => o == "-h");

                if (i != -)

                {

                    this.SmtpHost = args[i + ];

                }

                i = Array.FindIndex(args, o => o == "-p");

                if (i != -)

                {

                    this.FromPwd = args[i + ];

                }

            }

            public string FromMail { get; set; }

            public string ToMail { get; set; }

            public string Body { get; set; }

            public string Subject { get; set; }

            public string FromPwd { get; set; }

            public string SmtpHost { get; set; }

        }

    }