Detailed explanation of how to implement the mass mail function in asp.net

This article mainly introduces the mass email function implemented by asp.net, and analyzes the relevant operating skills and techniques of asp.net based on SMTP service for mass sending QQ emails based on specific examples. Notes, friends in need can refer to the following

The example in this article describes the mass email function implemented by asp.net. Share it with everyone for your reference, the details are as follows:

Some time ago, I needed to use a mass email function in the website I developed for my teacher, and I also used the mass email function of we7 when I was learning the cms system. I had some questions, so I checked the information on the Internet, summarized it myself, and packaged it into a class. It is useful for personal testing and supports attachments. I hope it can be helpful to everyone. I used QQ mailbox during the test and it was successful. The premise is to turn on the smtp service function in the mailbox settings. For example, in the account tab in the qq mailbox settings, check the required functions:

The principle is the same for other mailboxes ~~~~~~

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Mail;
using System.Web;
namespace MailSend
{
  public class SendEmail
  {
    /// <summary>
    /// 群发邮件函数
    /// </summary>
    /// <param name="subject">发送的主题</param>
    /// <param name="body">发送的内容</param>
    /// <param name="email_list">收件人列表，通过|来分割开来，可以自己定义</param>
    /// <param name="File_Path">发送附件的地址，获取了路径后上传</param>
    public static void Send(string subject, string body, string email_list, string File_Path)
    {
      string MailUser = "XXX@qq.com";//我测试的是qq邮箱，其他邮箱一样的道理
      string MailPwd = "你的密码";//邮箱密码
      string MailName = "测试";
      string MailHost = "smtp.exmail.qq.com";//根据自己选择的邮箱来查询smtp的地址
      MailAddress from = new MailAddress(MailUser, MailName); //邮件的发件人
      MailMessage mail = new MailMessage();
      //设置邮件的标题
      mail.Subject = subject;
      //设置邮件的发件人
      //Pass:如果不想显示自己的邮箱地址，这里可以填符合mail格式的任意名称，真正发mail的用户不在这里设定，这个仅仅只做显示用
      mail.From = from;
      //设置邮件的收件人
      string address = "";
      //传入多个邮箱，用“|”分割开，可以自己自定义，再通过mail.To.Add（）添加到列表
      string[] email = email_list.Split(&#39;|&#39;);
      foreach (string name in email)
      {
        if (name != string.Empty)
        {
          address = name;
          mail.To.Add(new MailAddress(address));
        }
      }
      //设置邮件的抄送收件人
      //这个就简单多了，如果不想快点下岗重要文件还是CC一份给领导比较好
      //mail.CC.Add(new MailAddress("Manage@hotmail.com", "尊敬的领导");
      //设置邮件的内容
      mail.Body = body;
      //设置邮件的格式
      mail.BodyEncoding = System.Text.Encoding.UTF8;
      mail.IsBodyHtml = true;
      //设置邮件的发送级别
      mail.Priority = MailPriority.Normal;
      //设置邮件的附件，将在客户端选择的附件先上传到服务器保存一个，然后加入到mail中
      if (File_Path != "")
      {
        mail.Attachments.Add(new Attachment(File_Path));
        mail.DeliveryNotificationOptions = DeliveryNotificationOptions.OnSuccess;
      }
      SmtpClient client = new SmtpClient();
      //设置用于 SMTP 事务的主机的名称，填IP地址也可以了
      client.Host = MailHost;
      //设置用于 SMTP 事务的端口，默认的是 25
      client.Port = 25;
      client.UseDefaultCredentials = false;
      //这里才是真正的邮箱登陆名和密码， 我的用户名为 MailUser ，我的密码是 MailPwd
      client.Credentials = new System.Net.NetworkCredential(MailUser, MailPwd);
      client.DeliveryMethod = SmtpDeliveryMethod.Network;
      ////如果发送失败，SMTP 服务器将发送 失败邮件告诉我
      mail.DeliveryNotificationOptions = DeliveryNotificationOptions.OnFailure;
      //都定义完了，正式发送了，很是简单吧！
      client.Send(mail);
    }
  }
}

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