C# 邮件批量发送程序

using System; 
using System.ComponentModel; 
using System.Net; 
using System.Net.Mail; 
  
namespace MailSendExample  
{ 
  
        //异步发送，获取发送状态 
        static bool mailSent = false; 
        public static void SendCompletedCallback(object sender, AsyncCompletedEventArgs e) 
        { 
  
            if (e.Cancelled) 
            { 
                mailSent = false; 
            } 
            if (e.Error != null) 
            { 
                mailSent = false; 
            } 
            else 
            { 
                mailSent = true; 
            } 
            
            
        } 
  
public static bool SendMail(string fromEmail, string fromName, string reEmail, string toEmail, string mailTitle, string mailBody) 
        { 
            
            //格式化Email，收件人支持半角逗号分隔的多个Email 
            toEmail = toEmail.Replace(";", ","); 
            toEmail = toEmail.Replace("；", ","); 
            toEmail = toEmail.Replace("，", ","); 
    
  
  
            MailMessage mail = new MailMessage(); 
            try 
            { 
                //发件人，发件人名 
                mail.From = new MailAddress( fromEmail, fromName); 
                //回复人，回复人名 
                mail.ReplyTo = new MailAddress(reEmail, fromName); 
                //收件人 
                mail.To.Add(toEmail); 
                //邮件优先级 
                mail.Priority = MailPriority.Normal; 
                //设置html邮件 
                mail.IsBodyHtml = true; 
                //标题 
                mail.Subject = mailTitle; 
                //内容 
                mail.Body = mailBody; 
            } 
            catch (Exception ex) 
            { 
                //错误日志记录 
                Logger.WriteLine("SendMail_ErrorMail:" + ex.Message + "|" + toEmail); 
                return false; 
            } 
  
            
            try 
            { 
                //邮件服务器 
                string SMTPServer = "mail.aaaa.com"; 
                //发送帐号 
                string SMTPAuthUsername = "bbb@aaaa.com"; 
                //发送账户的密码 
                string SMTPAuthPassword = "123456"; 
                //定义传输协议 
                SmtpClient smtp = new SmtpClient(SMTPServer); 
                //设置认证发件人 
                smtp.Credentials = new NetworkCredential(SMTPAuthUsername, SMTPAuthPassword); 
                //异步发送完成获取发送状态 
                smtp.SendCompleted += new SendCompletedEventHandler(SendCompletedCallback); 
  
                //调试 
                //Logger.WriteLine("SendMail:" + mail.To + "|" + mail.From ); 
  
                //异步发送 
                smtp.SendAsync(mail, String.Empty); 
                
                return mailSent; 
            } 
            catch (Exception ex) 
            { 
                Logger.WriteLine("SendMail_Send:" + ex.Message + "|" + SMTPServer); 
                return false; 
            } 
  
        } 
  
  
    } 
}