通过 C# 网页发送大量电子邮件的最佳方式是什么？

using System;
using System.Net;
using System.Net.Mail;

public class EmailSender
{
    public void SendEmails(string[] recipients, string subject, string body)
    {
        // 设置SMTP服务器和端口
        SmtpClient smtpClient = new SmtpClient("smtp.example.com", 587);

        // 设置发件人邮箱和密码
        smtpClient.Credentials = new NetworkCredential("your-email@example.com", "your-password");

        // 开启SSL加密
        smtpClient.EnableSsl = true;

        foreach (string recipient in recipients)
        {
            // 创建邮件对象
            MailMessage mailMessage = new MailMessage();
            mailMessage.From = new MailAddress("your-email@example.com");
            mailMessage.To.Add(new MailAddress(recipient));
            mailMessage.Subject = subject;
            mailMessage.Body = body;

            try
            {
                // 发送邮件
                smtpClient.Send(mailMessage);
                Console.WriteLine("邮件发送成功！");
            }
            catch (Exception ex)
            {
                Console.WriteLine("邮件发送失败：" + ex.Message);
            }
        }
    }
}