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

public class EmailSender
{
    public void SendEmail(string toAddress, string subject, string body)
    {
        // 設(shè)置發(fā)件人郵箱地址以及授權(quán)碼
        string fromAddress = "xxxxx@qq.com";
        string password = "wxxxxxdgtdzhecjb";

        // 創(chuàng)建郵件消息對(duì)象
        MailMessage mail = new MailMessage();
        mail.From = new MailAddress(fromAddress);
        mail.To.Add(new MailAddress(toAddress));
        mail.Subject = subject;
        mail.Body = body;

        // 創(chuàng)建SMTP客戶端對(duì)象，設(shè)置SMTP服務(wù)器和端口號(hào)(這里不用改)
        SmtpClient smtpClient = new SmtpClient("smtp.qq.com", 587);
        smtpClient.UseDefaultCredentials = false;
        smtpClient.Credentials = new NetworkCredential(fromAddress, password);
        smtpClient.EnableSsl = true;

        try
        {
            // 發(fā)送郵件
            smtpClient.Send(mail);
            Console.WriteLine("郵件發(fā)送成功！");
        }
        catch (Exception ex)
        {
            Console.WriteLine("發(fā)送郵件時(shí)出現(xiàn)錯(cuò)誤： " + ex.Message);
        }
    }
}
public class Test
{
    static int Main(string[] args)
    {
        EmailSender emailSender = new EmailSender();
        emailSender.SendEmail("yyyyyyy@qq.com", "測(cè)試郵件", "這是一封測(cè)試郵件");//發(fā)送地址、郵箱標(biāo)題、郵箱內(nèi)容
        return 0;
    }
}