MVC5发送邮件注册

#region 发送邮件
                    //填写电子邮件地址，和显示名称
                    System.Net.Mail.MailAddress from = new System.Net.Mail.MailAddress("xxx@126.com", "wode");
                    //填写邮件的收件人地址和名称
                    System.Net.Mail.MailAddress to = new System.Net.Mail.MailAddress("xxx@qq.com", "nide");
                    //设置好发送地址，和接收地址，接收地址可以是多个

                    System.Net.Mail.MailMessage mail = new System.Net.Mail.MailMessage();
                    mail.From = from;
                    mail.To.Add(to);
                    mail.Subject = "主题内容";

                    System.Text.StringBuilder strBody = new System.Text.StringBuilder();
                    strBody.Append("请通过单击 <a href=\"" + callbackUrl + "\">這裏</a>来确认你的帐户");

                    mail.Body = strBody.ToString();
                    mail.IsBodyHtml = true;//设置显示htmls
                    //设置好发送邮件服务地址
                    System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient();
                    client.Host = "smtp.126.com"; //这里发邮件用的是126，所以为"smtp.126.com"

                    //填写服务器地址相关的用户名和密码信息
                    client.Credentials = new System.Net.NetworkCredential("xxx@126.com", "这个需要到126邮箱里开启smtp，然后输入设置的密码");
                    //发送邮件
                    client.Send(mail); 
                    #endregion