using System;

 using System.Collections.Generic;

 using System.Configuration;

 using System.IO;

 using System.Linq;

 using System.Net.Mail;

 using System.Text;

 using System.Web;

 namespace CalslNum.Helper

 {

     /// <summary>

     ///发送邮件类

     /// </summary>

     public class MailService

     {

         /// <summary>

         /// 发送邮件程序调用方法 SendMail("abc@126.com", "某某人", "cba@126.com", "你好", "我测试下邮件", "邮箱登录名", "邮箱密码", "smtp.126.com", true,);

         /// </summary>

         /// <param name="from">发送人邮件地址</param>

         /// <param name="fromname">发送人显示名称</param>

         /// <param name="to">发送给谁（邮件地址）</param>

         /// <param name="subject">标题</param>

         /// <param name="body">内容</param>

         /// <param name="username">邮件登录名</param>

         /// <param name="password">邮件密码</param>

         /// <param name="server">邮件服务器 smtp服务器地址</param>

         /// <param   name= "IsHtml "> 是否是HTML格式的邮件 </param>

         /// <returns>send ok</returns>

         public static bool SendMail(string from, string fromname, string to, string subject, string body, string server, string username, string password, bool IsHtml)

         {

             //邮件发送类

             MailMessage mail = new MailMessage();

             try

             {

                 //是谁发送的邮件

                 mail.From = new MailAddress(from, fromname);

                 //发送给谁

                 mail.To.Add(to);

                 //标题

                 mail.Subject = subject;

                 //内容编码

                 mail.BodyEncoding = Encoding.Default;

                 //发送优先级

                 mail.Priority = MailPriority.High;

                 //邮件内容

                 mail.Body = body;

                 //是否HTML形式发送

                 mail.IsBodyHtml = IsHtml;

                 //邮件服务器和端口

                 SmtpClient smtp = new SmtpClient(server, );

                 smtp.UseDefaultCredentials = true;

                 //指定发送方式

                 smtp.DeliveryMethod = SmtpDeliveryMethod.Network;

                 //发件人身份验证,否则163   发不了

                 smtp.UseDefaultCredentials = true;

                 //指定登录名和密码

                 smtp.Credentials = new System.Net.NetworkCredential(username, password);

                 //超时时间

                 smtp.EnableSsl = false;

                 smtp.Timeout = ;

                 smtp.Send(mail);

                 return true;

             }

             catch (Exception)

             {

                 return false;

             }

             finally

             {

                 mail.Dispose();

             }

         }

         //读取指定URL地址的HTML，用来以后发送网页用

         public static string ScreenScrapeHtml(string url)

         {

             //读取stream并且对于中文页面防止乱码

             StreamReader reader = new StreamReader(System.Net.WebRequest.Create(url).GetResponse().GetResponseStream(), System.Text.Encoding.UTF8);

             string str = reader.ReadToEnd();

             reader.Close();

             return str;

         }

         //发送plaintxt

         public static bool SendText(string from, string fromname, string to, string subject, string body, string server, string username, string password)

         {

             return SendMail(from, fromname, to, subject, body, server, username, password, false);

         }

         //发送HTML内容

         public static bool SendHtml(string from, string fromname, string to, string subject, string body, string server, string username, string password)

         {

             return SendMail(from, fromname, to, subject, body, server, username, password, true);

         }

         //发送制定网页

         public static bool SendWebUrl(string from, string fromname, string to, string subject, string server, string username, string password, string url)

         {

             //发送制定网页

             return SendHtml(from, fromname, to, subject, ScreenScrapeHtml(url), server, username, password);

         }

         //默认发送格式

         public static bool SendEmailDefault(string ToEmail,string f_username,string f_pass,string f_times)

         {

             StringBuilder MailContent = new StringBuilder();

             MailContent.Append("亲爱的×××会员：<br/>");

             MailContent.Append("    您好！你于");

             MailContent.Append(DateTime.Now.ToString("yyyy-MM-dd HH:MM:ss"));

             MailContent.Append("通过<a href='#'>×××</a>管理中心审请找回密码。<br/>");

             MailContent.Append("　　　为了安全起见，请用户点击以下链接重设个人密码：<br/><br/>");

             string url = "http://www.×××.×××/SignIn/Rest?u=" + f_username + "&s=" + f_pass + "&t=" + f_times;  MailContent.Append("<a href='" + url + "'>" + url + "</a><br/><br/>");  MailContent.Append(" (如果无法点击该URL链接地址，请将它复制并粘帖到浏览器的地址输入框，然后单击回车即可。)");  return SendHtml(ConfigurationManager.AppSettings["EmailName"].ToString(), "会员管理中心", ToEmail, "×××找回密码", MailContent.ToString(), ConfigurationManager.AppSettings["EmailService"].ToString(), ConfigurationManager.AppSettings["EmailName"].ToString(), ConfigurationManager.AppSettings["EmailPass"].ToString()); //这是从webconfig中自己配置的。  }  }  }

webconfig配置信息

  <add key="EmailName" value="××××@163.com"/>

  <add key="EmailPass" value="××××"/>

  <add key="EmailService" value="smtp.163.com"/>

 //说明： 这里面的"EmailService"得与你自己设置邮箱的smtp/POP3/...服务要相同， 大部分是根据@后面的进行配置。我是用163邮箱配置的。 可以根据自己需要自己配置。

后台调用的方法

  public ActionResult SendEmail(string EmailName)

         {

             EmailName = Helper.FI_DesTools.DesDecrypt(EmailName);

             if (!Regex.IsMatch(EmailName, @"\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"))

             {

                 return Content("");

             }

             string f_username = "";

             string f_pass = "";

             string f_times = Helper.FI_DesTools.DesEncrypt(DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss"));

             List<user> list = (from a in users where a.emailaddress == EmailName select a).ToList();

             if (list.Count > )

             {

                 f_username = Helper.FI_DesTools.DesEncrypt(list[].×××);

                 f_pass = Helper.FI_DesTools.DesEncrypt(list[].×××);

                 bool flag = Helper.MailService.SendEmailDefault(EmailName, “×××”,“×××”, “×××”);  //这里面的参数根据自己需求自己定，最好进行加密

                 if (flag)

                 {

                     return Content("true");

                 }

                 else

                 {

                     return Content("false");

                 }

             }

             else {

                 return Content("false");

             }

         }