C#

public class SearchDocs
    {
        public int Id { get; set; }
        public long date { get; set; }
        public string Description { get; set; }
    }

while (sql_reader.Read())
{
    contract_id = Convert.ToInt32(sql_reader["contract_id"]);

    mail.To.Add(sql_reader["reminder_email"].ToString());
    mail.Subject = sql_reader["contract_name"].ToString();
    mail.Body = email_body.ToString();

    SmtpServer.Port = 587;
    SmtpServer.Credentials = new System.Net.NetworkCredential("it@mydomain.com", "mypassword");
    SmtpServer.EnableSsl = true;

    SmtpServer.Send(mail);
}