.net 邮箱验证码 邮箱验证码实现用户注册

.net邮箱注册
前端时间做项目,手机短信验证需要购买服务,而且容易被工具.
纠结之后,用了邮箱验证.
直接上代码

/// <summary>
        /// 同步发送邮件
        /// </summary>
        /// <param name="to">收件人邮箱地址</param>
        /// <param name="subject">主题</param>
        /// <param name="body">内容</param>
        /// <param name="encoding">编码</param>
        /// <param name="isBodyHtml">是否Html</param>
        /// <param name="enableSsl">是否SSL加密连接</param>
        /// <returns>是否成功</returns>
        public static bool Send(string to, string subject, string body, string encoding = "UTF-8", bool isBodyHtml = true, bool enableSsl = false)
        {
             
            //try
            //{
                MailMessage message = new MailMessage();
                // 接收人邮箱地址
                message.To.Add(new MailAddress(to));
                message.From = new MailAddress(MailUserName, MailName);
                message.BodyEncoding = Encoding.GetEncoding(encoding);
                message.Body = body;
                //GB2312
                message.SubjectEncoding = Encoding.GetEncoding(encoding);
                message.Subject = subject;
                message.IsBodyHtml = isBodyHtml;

                SmtpClient smtpclient = new SmtpClient(MailServer, 587);
                smtpclient.Credentials = new System.Net.NetworkCredential(MailUserName, MailPassword);
                //SSL连接
                smtpclient.EnableSsl = enableSsl;
                smtpclient.Send(message);
                return true;
            //}
            //catch (Exception ex)
            //{
            //    Console.WriteLine(ex.ToString());
            //    return false;
            //}
        }

[HttpPost]
        [ValidateAntiForgeryToken]
        [AjaxOnly]
        public ActionResult SendEmail(VerificationEntity entity)
        {
            VerificationEntity model = new VerificationEntity();
            if (entity.Telphone.IsEmpty())
                return Info("请输入正确邮箱地址");
            //if (entity.CodeType == 3)
            //{
            //   var  Cmodel = cuserBll.CheckCUser(entity.Telphone);
            //    if(Cmodel==null)
            //        return Info("账号不存在,输入正确的账号!");
            //}
            model.Telphone = entity.Telphone;
            model.CodeType = entity.CodeType;
            model.Type = 1;
            string ret = verificationBLL.AddCode(model);
            if (ret == "")
            {
                try
                {
                    bool flag = false;
                    if (model.CodeType == 1)
                          flag = MailHelper.Send(entity.Telphone, "28找群注册验证码通知", "注册验证码:" + model.Content + " 30分钟内有效,请输入验证码，完成注册<br>www.28zhaoqun.com 资源不断,人脉无线", "UTF-8", true, true);
                    else if (model.CodeType == 3)
                        flag = MailHelper.Send(entity.Telphone, "28找群密码找回验证码通知", "密码找回验证码:" + model.Content + " 30分钟内有效,请输入验证码，完成操作<br>www.28zhaoqun.com 资源不断,人脉无线", "UTF-8", true, true);
                    if (!flag)
                        return Error("邮件发送失败，请检查邮箱地址是否正确");
                }
                catch (Exception ex)
                {
                    //return Error(ex.Message);
                    throw;
                }
                return Success("验证码已经发送，请进入邮箱查看验证码。");
            }
            else
                return Error(ret);
        }