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using System;

using System.Collections.Generic;

using System.Text;

using System.Net.Mail;

using System.IO;
/// <summary>

/// sendEmail 的摘要说明

/// </summary>

public static class sendEmail

{

static sendEmail()

{

//

// TODO: 在此处添加构造函数逻辑

//

}

/// <summary>

/// 发送邮件程序

/// </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="fujian">附件</param>

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

/// 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", "");

///

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

{

try

{

//邮件发送类

MailMessage mail = new MailMessage();

//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 = true;

//附件

if (fujian.Length > 0)

{

mail.Attachments.Add(new Attachment(fujian));

}

//邮件服务器和端口

SmtpClient smtp = new SmtpClient(server, 25);

smtp.UseDefaultCredentials = true;

//指定发送方式

smtp.DeliveryMethod = SmtpDeliveryMethod.Network;

//指定登录名和密码

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

//mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1"); //basic authentication

//mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", username); //set your username here

//mail.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", password); //set your password here

//超时时间

smtp.EnableSsl = false;

smtp.Timeout = 10000;

smtp.Send(mail);

return "成功发送请注意查收";

}

catch (Exception exp)

{

return exp.Message;

}

}

//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;

}

/// <summary>

/// 发送邮件

/// </summary>

/// <param name= "server "> smtp地址 </param>

/// <param name= "username "> 用户名 </param>

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

/// <param name= "from "> 发信人地址 </param>

/// <param name= "to "> 收信人地址 </param>

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

/// <param name= "body "> 邮件正文 </param>

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

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

{

try

{

//设置SMTP 验证,端口默认为25，如果需要其他请修改

SmtpClient mailClient = new SmtpClient(server, 25);

//指定如何发送电子邮件。

//Network 电子邮件通过网络发送到 SMTP 服务器。

//PickupDirectoryFromIis 将电子邮件复制到挑选目录，然后通过本地 Internet 信息服务 (IIS) 传送。

//SpecifiedPickupDirectory 将电子邮件复制到 SmtpClient.PickupDirectoryLocation 属性指定的目录，然后由外部应用程序传送。

mailClient.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;

//创建邮件对象

MailMessage mailMessage = new MailMessage(from, to, subject, body);

//定义邮件正文，主题的编码方式

mailMessage.BodyEncoding = System.Text.Encoding.GetEncoding("gb2312");

mailMessage.SubjectEncoding = System.Text.Encoding.GetEncoding("gb2312");

//mailMessage.BodyEncoding = Encoding.Default;

//获取或者设置一个值，该值表示电子邮件正文是否为HTML

mailMessage.IsBodyHtml = IsHtml;

//指定邮件的优先级

mailMessage.Priority = MailPriority.High;

//发件人身份验证,否则163 发不了

//表示当前登陆用户的默认凭据进行身份验证，并且包含用户名密码

mailClient.UseDefaultCredentials = true;

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

//发送

mailClient.Send(mailMessage);

return "发送成功";

}

catch (Exception exp)

{

return exp.Message;

}

}

//发送plaintxt

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

{

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

}

//发送HTML内容

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

{

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

}

//发送制定网页

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

{

//发送制定网页

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

}

}

后台调用示例：

Response.Write("发送附件："+sendEmail.SendMail("shaxiaozier@sohu.com", "某某人", "hou@sina.com", "你好", "我测试下邮件", "shaxiaozier@sohu.com",
"*********", "smtp.sohu.com", Server.MapPath("~/fujian/wap.doc")));

Response.Write("电子邮件正文是HTML格式：" + sendEmail.SendMail("shaxiaozier@sohu.com", "hou@sina.com", "主题", "正文<br/>又一行", "smtp.sohu.com", "shaxiaozier", "*********", false));

Response.Write("电子邮件正文非HTML格式：" + sendEmail.SendMail("shaxiaozier@sohu.com", "hou@sina.com", "主题", "正文<br/>又一行", "smtp.sohu.com", "shaxiaozier", "*********", true));

Response.Write("发送制定网页："+sendEmail.SendWebUrl("shaxiaozier@sohu.com", "hou@sina.com", "zhuti", "smtp.sohu.com", "shaxiaozier", "*********", "http://www.baidu.com"));