ASP.NET 利用Outlook发送邮件_[Asp.Net教程]
					引用命名空间:
using System.Net.Mail;
using System.Configuration;
 /// 
 /// 发送EMAIL
 /// 
 /// 收件人地址
 /// 主题
 /// 内容
 /// 发件人名称
 /// 发送是否成功
 public static bool SendMail(string sRecipientEmail, string sSubject, string sMessage,string sSendName)
 {
 //邮件对象
 MailMessage emailMessage;
 //smtp客户端对象
 SmtpClient client;
 // 初始化邮件对象
 if (string.IsNullOrEmpty(sSendName))
 {
 sSendName = "客户服务中心";
 }
 
 //发件人
 String sSenderEmail = ""+sSendName+"<" + ConfigurationManager.AppSettings["EmailAddress"] + ">";
 emailMessage = new MailMessage(sSenderEmail, sRecipientEmail, sSubject, sMessage);
 emailMessage.IsBodyHtml = true;
 emailMessage.SubjectEncoding = System.Text.Encoding.Default;
 emailMessage.BodyEncoding = System.Text.Encoding.Default;
 //加入
 emailMessage.Headers.Add("X-Priority", "3");
 emailMessage.Headers.Add("X-MSMail-Priority", "Normal");
 emailMessage.Headers.Add("X-Mailer", "Microsoft Outlook Express 6.00.2900.2869");
 emailMessage.Headers.Add("X-MimeOLE", "Produced By Microsoft MimeOLE V6.00.2900.2869");
 emailMessage.Headers.Add("ReturnReceipt", "1");
 //邮件发送客户端
 client = new SmtpClient();
 //邮件服务器及帐户信息
 client.Host = ConfigurationManager.AppSettings["EmailServer"];
 //client.Host = "smtp.163.com";
 //client.Port = 465;
 //client.EnableSsl = true;
 System.Net.NetworkCredential Credential = new System.Net.NetworkCredential();
 
 //web.config中读取邮件服务器用户名和密码信息
 Credential.UserName = ConfigurationManager.AppSettings["EmailUserName"];
 Credential.Password = ConfigurationManager.AppSettings["EmailPassword"];
 client.Credentials = Credential;
 try
 {
 client.Send(emailMessage);
 }
 catch
 {
 //错误处理待定
 return false;
 }
 return true;
 }
来源:csdn