转载地址:http://www.cnblogs.com/panlijiao/archive/2012/11/14/2773836.html
从163邮件服务器发送:
string _to = "别人的邮箱地址";
string _from = "你自己的163邮箱地址";
string _subject = "这里输入主题";
string _body = "这里输入信件内容";
MailMessage message = new MailMessage();
message.From = new MailAddress(_from);
message.To.Add(new MailAddress(_to));
message.Subject = _subject;
message.Body = _body;
SmtpClient client = new SmtpClient("smtp.163.com");
client.Port = 25;
//设置超时时间
client.Timeout = 9999;
//要输入邮箱用户名与密码
client.Credentials = new NetworkCredential(_from, "你自己的163邮箱的密码");
client.Send(message);