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背景：现在几乎每个企业都要用到邮箱，而在大客户量情况下，为我们的不同等级的客户送上节日关怀，以及把我们的喜讯、新品通知到他们是我们急需解决的问题。效果如图
思路：
1、静态化网页模版，首先考虑需要发送什么，把需要的东西做成小而精美的html静态化页面以待发送时候用到；
2、关于发送问题，点击“发送邮件”弹出群发邮件的框，填写主题、html的服务器所在地址、收件人（多个）；
3、群发的实现。
代码C#：
/// <summary>
/// 发送失败的邮箱地址搜集参数
/// </summary>
private string errorMail;
群发邮件点击事件
protected void BtnSendMail_Click(object sender, EventArgs e)
{
if (string.IsNullOrEmpty(txTopic.Value))
{
MessageShow("邮件主题必填");
return;
}
if (string.IsNullOrEmpty(txUrl.Value))
{
MessageShow("URL内容必填");
return;
}
if (string.IsNullOrEmpty(txTo.Value))
{
MessageShow("收件人必填");
return;
}
string email = ConfigurationManager.AppSettings["ManagerSendMailUserName"].ToString(); //登录用户邮箱
string emailpwd = ConfigurationManager.AppSettings["ManagerSendMailUserPwd"].ToString(); //登录用户邮箱密码
string s = GetHtmlCode(txUrl.Value, "gb2312");
bool restr = Sendmail(email, txTo.Value, txTopic.Value, true, s, "smtp.exmail.qq.com", email, emailpwd);
if (restr)
{
ClientScript.RegisterStartupScript(this.GetType(), "", "<script>alert(‘全部发送成功！‘);</script>");
}
else
{
ClientScript.RegisterStartupScript(this.GetType(), "",
"<script>alert(‘已发送，但以下地址发送失败：" + errorMail + "可能是地址不存在！‘);</script>");
}
}
/// <summary>
/// 发送邮件
/// </summary>
/// <param name="from">发送人邮件地址</param>
/// <param name="to">接收人邮件地址</param>
/// <param name="subject">邮件主题</param>
/// <param name="isBodyHtml">是否是Html</param>
/// <param name="body">邮件体</param>
/// <param name="smtpHost">SMTP服务器地址,例如:smtp.163.com</param>
/// <param name="userName">用户名</param>
/// <param name="password">密码</param>
/// <returns>是否成功</returns>
public bool Sendmail(string from, string to, string subject, bool isBodyHtml, string body, string smtpHost, string userName, string password)
{
bool isSuccess = true;
string[] ts = null;
if (!string.IsNullOrEmpty(to))
{
if (to.Contains(";"))
ts = to.Split(‘;‘);
else
ts = new string[] { to };
foreach (string t in ts)
{
if (!string.IsNullOrEmpty(t))
{
MailMessage mm = new MailMessage();
mm.From = new MailAddress(from);
mm.To.Add(new MailAddress(t));
mm.Subject = subject;
mm.IsBodyHtml = isBodyHtml;
mm.Body = body;
SmtpClient sc = new SmtpClient();
sc.Host = smtpHost;
sc.Port = 25;
sc.EnableSsl = false;
sc.Credentials = new NetworkCredential(userName, password);
sc.UseDefaultCredentials = true;
sc.Credentials = new System.Net.NetworkCredential(userName, password);
sc.DeliveryMethod = SmtpDeliveryMethod.Network;
try
{
sc.Send(mm);
}
catch (Exception x)
{
errorMail += t + ";";
isSuccess = false;
continue;
}
}
}
}
return isSuccess;
}
/// <summary>
/// 获取指定路径下的模板的HTML源代码
/// </summary>
/// <param name="TemplatePath">模板的路径</param>
/// <param name="EncodingType">网页类型（有些是UTF8，有些是GB2312）</param>
/// <returns>源代码</returns>
private string GetHtmlCode(string TemplatePath, string EncodingType)
{
try
{
if (TemplatePath != string.Empty)
{
string ForesideUriPath = string.Empty;
if (!TemplatePath.ToLower().StartsWith("http://"))
ForesideUriPath = HttpContext.Current.Server.MapPath("~/") + TemplatePath;
else
ForesideUriPath = TemplatePath;
WebClient webClient = new WebClient();
//设置网络凭证为系统凭证
webClient.Credentials = CredentialCache.DefaultCredentials;
//获取指定URI的网页的源代码
byte[] byteDataBuffer = webClient.DownloadData(ForesideUriPath);
string htmlCode = "";
if (EncodingType == "UTF8")
{
htmlCode = Encoding.UTF8.GetString(byteDataBuffer);
}
else
{
htmlCode = Encoding.GetEncoding(EncodingType).GetString(byteDataBuffer);
}
htmlCode = Regex.Replace(htmlCode, @"<!DOCTYPE\s*HTML\s*PUBLIC[^>]+>", "", RegexOptions.Singleline);
htmlCode = Regex.Replace(htmlCode, @"\s+", " ", RegexOptions.Singleline);
return htmlCode;
}
else
{
return "";
}
}
catch (Exception ee)
{
throw (ee);
}
}
总结：这个功能还是非常有用的，大家可以扩展，定时发送什么，实现各种烂漫的功能。最后说一声，祝大家羊年大吉，心想事成！
asp.net 客户邮件群发功能 SendMail 发送静态化html
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原文地址：http://www.cnblogs.com/chenyjccxy/p/4286402.html
