Below Code Is Send Mail To One Email Address, Bt I Want To Send To Many Email Addresses..How Do I Pass Multiple Mail Addresses Through To Field?

public ActionResult Index(MyMailModel objModelMail, string submit)
        {            
            if (submit == "Productscar")
            {

                string from1 = "mandla.anilbabu@gmail.com";
                string email1 = objModelMail.Email;
               
               
                using (MailMessage mail = new MailMessage("mandla.anilbabu@gmail.com",from1))
                {

                    mail.Subject = "This is subject new cars theam";
                   
                    mail.Body = "New cars Theam 1 selected" + Environment.NewLine + "FROM    :" + email1;
                   
                    mail.IsBodyHtml = false;
                    SmtpClient smtp = new SmtpClient();
                    smtp.Host = "smtp.gmail.com";
                    smtp.EnableSsl = true;
                    NetworkCredential networkCredential = new NetworkCredential(from1, "PWD");
                    smtp.UseDefaultCredentials = true;
                    smtp.Credentials = networkCredential;
                    smtp.Port = 587;                  
                    smtp.Send(mail);
                    ViewBag.Message = "Sent";
                    ViewData["Message"] = "Saved theam successfully,this will update soon...";
                    return View("Index", objModelMail);

                }
            }
}

public class MyMailModel
    {
        public string From { get; set; }
        [Required(ErrorMessage = "Please enter your email address")]
        [RegularExpression(@"[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,4}", ErrorMessage = "Please enter correct email")]
        public string Email { get; set; }       

        public string To { get; set; }
        public string Subject { get; set; }
        public string Body { get; set; }
    }