c#发送邮件

//from是发送的邮箱地址
//to是指发送的目标邮箱
///subject是标题
///body是发送的内容，注意相关词汇可能会导致当垃圾邮箱处理
private void SendMessage(string from, string to, string subject, string body)
 {
            System.Net.Mail.MailMessage mm = null;
                SmtpClient Client;
             Client = new SmtpClient
            {
                Host = "smtp.163.com",//QQ的是smtp.qq.com
                Port = 25,//端口测试和QQ的都是25测试成功
                DeliveryMethod = SmtpDeliveryMethod.Network
            };
            Client.UseDefaultCredentials = false;
            Client.Credentials = new NetworkCredential("***@163.com", "smtp服务的密码");//在设置里面开启会有密码提示QQ同理

try { 
             mm = new System.Net.Mail.MailMessage(from, to, subject, body); 
             mm.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure; 
             mm.BodyEncoding = System.Text.Encoding.UTF8; 
             mm.IsBodyHtml = true;
             Client.Send(mm); 
             isSent = true; 

} catch (Exception ex)
 { 

            //process ex.message

   } finally { 
            mm.Dispose(); 

     } 
 

}