NET简单发送电子邮件

            using System.Net.Mail;

            string txtTitle = this.txtTitle.Text;
            string txtName = this.txtName.Text;
            string txtEmail = this.txtEmail.Text;
            string txtTel = this.txtTel.Text;
            string txtAddress = this.txtAddress.Text;
            string txtContent = this.txtContent.Text;

            string body = "";
            body = body + "留言标题:" + txtTitle + "<br>";
            body = body + "您的姓名:" + txtName + "<br>";
            body = body + "您的邮件:" + txtEmail + "<br>";
            body = body + "联系电话:" + txtTel + "<br>";
            body = body + "联系地址:" + txtAddress + "<br>";
            body = body + "留言内容:" + txtContent + "<br>";

            SmtpClient client = new SmtpClient();
            MailAddress from = new MailAddress(txtEmail);
            MailAddress to = new MailAddress("[e-mail]");
            MailMessage message = new MailMessage(from, to);
            message.Body = body;
            message.Subject = "盗版举报";
            message.IsBodyHtml = true;

            client.DeliveryMethod = SmtpDeliveryMethod.PickupDirectoryFromIis;
            client.Send(message);
            Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "success", "alert('提交成功!');", true);
            message.Dispose();