<appSettings><!--begin 邮箱配置--><add key="smtpServer" value="smtp.qq.com" /><!--邮箱SMTP服务器 可用qq邮箱、163邮箱，只是关键字不一样--><add key="mailFrom" value="1509802981@qq.com" /><!--当前发件箱的邮箱账号--><add key="userPassword" value="wckfuxwamayvgiba" /> <!--当前发件授权码，需要去发件开通获取  --><add key="mailTo" value="1509802981@qq.com;1509802981@qq.com" /><!--收件人：收件箱邮箱名称，多个收件人以分号;做分割符，这里我用同一个做测试--><!--end 邮箱配置--></appSettings>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net.Mail;
using System.Text;
using System.Threading.Tasks;namespace ProjectWebDAL
{public static class EmailHelper{#region 发送邮件/// <summary>/// 发送邮件/// </summary>/// <param name="mailSubject">邮箱主题</param>/// <param name="mailContent">邮箱内容</param>/// <returns>返回发送邮箱的结果</returns>public static bool SendEmail(string mailSubject, string mailContent){// 设置发送方的邮件信息string smtpServer = System.Configuration.ConfigurationManager.AppSettings["smtpServer"];//SMTP服务器  //smtp.qq.com string mailFrom = System.Configuration.ConfigurationManager.AppSettings["mailFrom"];  // 当前发件箱登陆名string userPassword = System.Configuration.ConfigurationManager.AppSettings["userPassword"]; //授权码，在当前发送邮箱里面进行设置 string mailTo = System.Configuration.ConfigurationManager.AppSettings["mailTo"];  //收件人：收件箱邮箱名称，多个收件人以分号;做分割符bool b = false;string[] mailTos = mailTo.Split(new char[] { ';' }, StringSplitOptions.RemoveEmptyEntries);// 邮件服务设置SmtpClient smtpClient = new SmtpClient();smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;//指定电子邮件发送方式//smtpClient.DeliveryMethod = SmtpDeliveryMethod.PickupDirectoryFromIis;//指定电子邮件发送方式smtpClient.Host = smtpServer; //指定SMTP服务器smtpClient.Credentials = new System.Net.NetworkCredential(mailFrom, userPassword);//用户名和密码for (int i = 0; i < mailTos.Length; i++){// 发送邮件设置        MailMessage mailMessage = new MailMessage(mailFrom, mailTos[i]);mailMessage.Subject = mailSubject;//主题mailMessage.Body = mailContent;//内容mailMessage.BodyEncoding = Encoding.UTF8;//正文编码mailMessage.IsBodyHtml = true;//设置为HTML格式mailMessage.Priority = MailPriority.Low;//优先级try{smtpClient.Send(mailMessage); // 发送邮件b = true;}catch (SmtpException ex){return false;}}return b;}#endregion}
}

     //邮件发送public JsonResult Email(){ResultInfo result = new ResultInfo();EmailHelper.SendEmail("我是邮件主题", "我是邮件内容 ");result.res = true;result.info = "邮件发送成功！";return Json(result, JsonRequestBehavior.AllowGet);}//自定义返回json数据类型public class ResultInfo{public bool res { get; set; }public string info { get; set; }}