本文实例为大家分享了C# Email发送邮件的具体代码，供大家参考，具体内容如下
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Net.Mail;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WinUI.BAS
{
public partial class sendMail : Form
{
public sendMail()
{
InitializeComponent();
}
private void simpleButton1_Click(object sender, EventArgs e)
{
//回执地址
var Receipt = "****@163.com";
//实例化两个必要的
MailMessage mail = new MailMessage();
SmtpClient smtp = new SmtpClient();
//发送邮箱地址
mail.From = new MailAddress("****@163.com");
//收件人(可以群发)
mail.To.Add(new MailAddress("****@163.com"));
//是否以HTML格式发送
mail.IsBodyHtml = true;
//主题的编码格式
mail.SubjectEncoding = Encoding.UTF8;
//邮件的标题
mail.Subject = "测试一下发件的标题";
//内容的编码格式
mail.BodyEncoding = Encoding.UTF8;
//邮件的优先级
mail.Priority = MailPriority.Normal;
//发送内容,带一个图片标签,用于对方打开之后,回发你填写的地址信息
mail.Body = @"获取打开邮件的用户IP，图片由服务器自动生成：<img src='" + Receipt + "'>";
//收件人可以在邮件里面
mail.Headers.Add("Disposition-Notification-To", "回执信息");
//发件邮箱的服务器地址
smtp.Host = "smtp.163.com";
smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
smtp.Timeout = 1000000;
//是否为SSL加密
smtp.EnableSsl = true;
//设置端口,如果不设置的话,默认端口为25
smtp.Port = 25;
smtp.UseDefaultCredentials = true;
//验证发件人的凭据
smtp.Credentials = new System.Net.NetworkCredential("****@163.com", "这里的密码是授权码");
try
{
//发送邮件
smtp.Send(mail);
MessageBox.Show("发送成功");
}
catch (Exception e1)
{
MessageBox.Show("发送失败：" + e1);
}
}
}
}