C#实现邮件发送功能

发送邮件所用的核心知识点

微软封装好的MailMessage类：主要处理发送邮件的内容（如：收发人地址、标题、主体、图片等等）

微软封装好的SmtpClient类：主要处理用smtp方式发送此邮件的配置信息（如：邮件服务器、发送端口号、验证方式等等）

SmtpClient主要进行了三层的封装：Socket --> TcpClient --> SmtpClient

具体代码请看如下所示：　　

public class MyEmail
{
private MailMessage mMailMessage;   //主要处理发送邮件的内容（如：收发人地址、标题、主体、图片等等）
private SmtpClient mSmtpClient; //主要处理用smtp方式发送此邮件的配置信息（如：邮件服务器、发送端口号、验证方式等等）
private int mSenderPort;   //发送邮件所用的端口号（htmp协议默认为25）
private string mSenderServerHost;    //发件箱的邮件服务器地址（IP形式或字符串形式均可）
private string mSenderPassword;    //发件箱的密码
private string mSenderUsername;   //发件箱的用户名（即@符号前面的字符串，例如：hello@163.com，用户名为：hello）
private bool mEnableSsl;    //是否对邮件内容进行socket层加密传输
private bool mEnablePwdAuthentication;  //是否对发件人邮箱进行密码验证

///<summary>
/// 构造函数
///</summary>
///<param name="server">发件箱的邮件服务器地址</param>
///<param name="toMail">收件人地址（可以是多个收件人，程序中是以“;"进行区分的）</param>
///<param name="fromMail">发件人地址</param>
///<param name="subject">邮件标题</param>
///<param name="emailBody">邮件内容（可以以html格式进行设计）</param>
///<param name="username">发件箱的用户名（即@符号前面的字符串，例如：hello@163.com，用户名为：hello）</param>
///<param name="password">发件人邮箱密码</param>
///<param name="port">发送邮件所用的端口号（htmp协议默认为25）</param>
///<param name="sslEnable">true表示对邮件内容进行socket层加密传输，false表示不加密</param>
///<param name="pwdCheckEnable">true表示对发件人邮箱进行密码验证，false表示不对发件人邮箱进行密码验证</param>
public MyEmail(string server, string toMail, string fromMail, string subject, string emailBody, string username, string password, string port, bool sslEnable, bool pwdCheckEnable)
{
try
{
mMailMessage = new MailMessage();
mMailMessage.To.Add(toMail);
mMailMessage.From = new MailAddress(fromMail);
mMailMessage.Subject = subject;
mMailMessage.Body = emailBody;
mMailMessage.IsBodyHtml = true;
mMailMessage.BodyEncoding = System.Text.Encoding.UTF8;
mMailMessage.Priority = MailPriority.Normal;
this.mSenderServerHost = server;
this.mSenderUsername = username;
this.mSenderPassword = password;
this.mSenderPort = Convert.ToInt32(port);
this.mEnableSsl = sslEnable;
this.mEnablePwdAuthentication = pwdCheckEnable;
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
}

public void Send()
{
try
{
if (mMailMessage != null)
{
mSmtpClient = new SmtpClient();
//mSmtpClient.Host = "smtp." + mMailMessage.From.Host;
mSmtpClient.Host = this.mSenderServerHost;
mSmtpClient.Port = this.mSenderPort;
mSmtpClient.UseDefaultCredentials = false;
mSmtpClient.EnableSsl = this.mEnableSsl;
if (this.mEnablePwdAuthentication)
{
System.Net.NetworkCredential nc = new System.Net.NetworkCredential(this.mSenderUsername, this.mSenderPassword);
//mSmtpClient.Credentials = new System.Net.NetworkCredential(this.mSenderUsername, this.mSenderPassword);
//NTLM: Secure Password Authentication in Microsoft Outlook Express
mSmtpClient.Credentials = nc.GetCredential(mSmtpClient.Host, mSmtpClient.Port, "NTLM");
}
else
{
mSmtpClient.Credentials = new System.Net.NetworkCredential(this.mSenderUsername, this.mSenderPassword);
}
mSmtpClient.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network;
mSmtpClient.Send(mMailMessage);
}
}
catch (Exception ex)
{
//m_CreateErrorLogTxt("程序池(Email)通知", "邮件发送失败", ex.Message);
}
}

}

转自：http://www.cnblogs.com/mingmingruyuedlut/archive/2011/10/14/2212255.html

/// <summary>
/// 发送邮件通知
/// </summary>
/// <param name="subjectInfo">标题</param>
/// <param name="bodyInfo">内容</param>
public static void Email(string subjectInfo, string bodyInfo)
{
try
{
var appSettings = System.Configuration.ConfigurationManager.AppSettings;//获取config配置信息
string senderServerIp = "mail.zbian.cn";
string toMailAddress = appSettings["toMailAddress"];//接受方地址
string fromMailAddress = appSettings["fromMailAddress"];//发送方地址
string mailUsername = appSettings["mailUsername"]; //发送账户
string mailPassword = appSettings["mailPassword"]; //发送邮箱的密码
string mailPort = "25";
MyEmail email = new MyEmail(senderServerIp, toMailAddress, fromMailAddress, subjectInfo, bodyInfo, mailUsername, mailPassword, mailPort, false, false);
email.Send();
}
catch (Exception ex)
{
}
}

///添加config配置信息
Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
config.AppSettings.Settings.Add("IsFirstInstall", "true");
config.Save(ConfigurationSaveMode.Modified);
ConfigurationManager.RefreshSection("appSettings");

///获取config配置信息
var appSettings = System.Configuration.ConfigurationManager.AppSettings;