引用
System.Net.Mail
SmtpClient client = new SmtpClient("smtp.sina.com"); //设置邮件协议
client.UseDefaultCredentials = false;//这一句得写前面
client.DeliveryMethod = SmtpDeliveryMethod.Network; //通过网络发送到Smtp服务器
client.Credentials = new NetworkCredential("sunny_oyh", "123456987"); //通过用户名和密码 认证
MailMessage mmsg = new MailMessage(new MailAddress("sunny_oyh@sina.com"), new MailAddress("ouyanghua568@126.com")); //发件人和收件人的邮箱地址
mmsg.Subject = "mail subject"; //邮件主题
mmsg.SubjectEncoding = Encoding.UTF8; //主题编码
mmsg.Body = "mailbody"; //邮件正文
mmsg.BodyEncoding = Encoding.UTF8; //正文编码
mmsg.IsBodyHtml = false; //设置为HTML格式
mmsg.Priority = MailPriority.High; //优先级
client.Send(mmsg);