asp.net中C# 利用MailMessage发送邮件代码

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Net.Mail;

using System.Net.Mime;

using System.IO;

using System.Timers;

using System.Xml;

using System.Net;

namespace TEST.SUBUNIT

{

public class EmailHelper

{

public MailMessage mailMessage(string fromAddress,string desemailuser, string toAddress, string emailSubject, string emailText) //邮件的发送收者，支持群发，多个地址之间用 半角逗号 分开

{

MailMessage mm = new MailMessage();

mm.To.Add("[email protected]");

//mm.To.Add(toAddress);//暂时屏蔽

////抄送

mm.CC.Add(new MailAddress("[email protected]", "张三", Encoding.GetEncoding(936)));

mm.CC.Add(new MailAddress("[email protected]", "李四", Encoding.GetEncoding(936)));

mm.CC.Add(new MailAddress("[email protected]", "王五", Encoding.GetEncoding(936)));

//mm.Bcc.Add("[email protected],[email protected]");

mm.From = new MailAddress(fromAddress, desemailuser.Length>0?desemailuser:fromAddress, Encoding.GetEncoding(936));

mm.SubjectEncoding = Encoding.GetEncoding(936);//这里非常重要，如果你的邮件标题包含中文，这里一定要指定，否则对方收到的极有可能是乱码。

mm.Subject = emailSubject; //邮件标题

mm.IsBodyHtml = true; //邮件正文是否是HTML格式

mm.BodyEncoding = Encoding.GetEncoding(936); //邮件正文的编码， 设置不正确， 接收者会收到乱码

//-------------------------------------------------------------------------

emailText += "这是要正确发送的邮箱:" + toAddress;

mm.Body = emailText;//邮件正文

mm.Priority = MailPriority.High; //邮件的优先级，分为 Low, Normal, High，通常用 Normal即可

//mm.Attachments.Add(new Attachment(@"d:a.doc",System.Net.Mime.MediaTypeNames.Application.Rtf));

////第二个参数，表示附件的文件类型，可以不用指定

return mm;

}

public bool sendEmail(string fromemailaddress, string toemailaddress,string emailtitle,string emailcontent,string host,string port,string fromemailuser,string desemailuser,string fromemailpass)

{

bool b=false;

string message=string.Empty;

MailMessage mailessage =this.mailMessage(fromemailaddress,desemailuser,toemailaddress,emailtitle,emailcontent);

SmtpClient smtp = new SmtpClient(); //实例化一个SmtpClient

smtp.DeliveryMethod = SmtpDeliveryMethod.Network; //将smtp的出站方式设为 Network

smtp.EnableSsl = false;//smtp服务器是否启用SSL加密

smtp.Host = host; //指定 smtp 服务器地址

smtp.Port = int.Parse(port); //指定 smtp 服务器的端口，默认是25

smtp.Credentials = new NetworkCredential(fromemailuser, fromemailpass);//认证

try

{

smtp.Send(mailessage);

b = True;

message= "发送成功!";

}

catch (System.Net.Mail.SmtpException ex)

{

b = False;

message= "发送失败!";

}

return b;

}

}

}