C#发送QQ邮箱

using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Configuration;
using SendEmailDemo.Models;
using System.Net;
using System.Net.Mail;
using System.Text;
using System.Threading.Tasks;

namespace SendEmailDemo.Controllers
{
    [Route("[controller]/[action]")]
    [ApiController]
    public class HomeController : ControllerBase
    {
        private readonly IConfiguration _configuration;
        public HomeController(IConfiguration configuration)
        {
            _configuration = configuration;
        }
        public async Task<IActionResult> SendQQEmail()
        {
            //读取配置文件
            EmailConfig emailConfig = _configuration.GetSection("QQEmailConfig").Get<EmailConfig>();

            //实例化对象
            using (MailMessage mail = new MailMessage())
            {
                //发件人
                mail.From = new MailAddress(emailConfig.From.email, emailConfig.From.displayname);
                //收件人
                foreach (var item in emailConfig.Addressee)
                {
                    mail.To.Add(new MailAddress(item.email, item.displayname));
                }
                //标题
                mail.Subject = emailConfig.Subject;
                //内容
                mail.Body = "<b>财报显示</b>，保利地产2019年上半年净利润同比增长53.28%，2018年上半年净利润同比增长14.94%，2017年净利润同比增长13.92%。由此可见，保利地产今年上半年净利润增速创下三年来新低。";
                //内容是否为 html 渲染
                mail.IsBodyHtml = true;
                //标题编码
                mail.SubjectEncoding = Encoding.UTF8;
                //内容编码
                mail.BodyEncoding = Encoding.UTF8;
                //附件
                mail.Attachments.Add(new Attachment(@"D:Music林俊杰 - 曹操.m4a"));
                //smtp客户端
                using (SmtpClient client = new SmtpClient())
                {
                    //主机
                    client.Host = emailConfig.Host;
                    //端口
                    client.Port = emailConfig.Port;
                    //是否为加密
                    client.EnableSsl = emailConfig.EnableSsl;
                    //凭证（发件人email、 授权码）
                    client.Credentials = new NetworkCredential(emailConfig.From.email, emailConfig.AuthorizationCode);
                    //发送邮件
                    await client.SendMailAsync(mail);
                }
                return new JsonResult(new
                {
                    code = 200,
                    message = "邮件已发送请注意查收",
                    data = emailConfig.Addressee
                });

            }

        }



    }
}

//配置文件实体类
public class EmailConfig
    {
        public class Config
        {
            public string email { get; set; }
            public string displayname { get; set; }
        }

        public Config From { get; set; }
        public Config[] Addressee { get; set; }
        public string AuthorizationCode { get; set; }

        public string Subject { get; set; }
        public string Host { get; set; }
        public int Port { get; set; }
        public bool EnableSsl { get; set; }

    }

//配置文件
{
  "Logging": {
    "LogLevel": {
      "Default": "Information",
      "Microsoft": "Warning",
      "Microsoft.Hosting.Lifetime": "Information"
    }
  },
  "QQEmailConfig": {
    "From": { //发件人
      "email": "123456789@qq.com", //邮件
      "displayname": "tomorrow得到系统通知" //显示名称
    },
    "AuthorizationCode": "************", //授权码
    "Addressee": [ //收件人
      {
        "email": "147258369@qq.com",
        "displayname": "张三"
      },
      {
        "email": "963852741@qq.com",
        "displayname": "李四"
      }
    ],
    "Subject": "tomorrow的系统通知", //统一标题
    "Host": "smtp.qq.com", //主机
    "Port": 587, //端口
    "EnableSsl": true //是否加密
  },
  "AllowedHosts": "*"
}

获取授权码

 

 发送短信，后点击 “我已发送”

附件预览