using System.Net.Mail;

namespace ConsoleApp1
{
    public static class SendMail
    {
        public static void Main()
        {
            MailAddress to = new MailAddress("ng.frolov@autodrilling.ru");
            MailAddress from = new MailAddress("bot@autodrilling.ru");
            MailMessage message = new MailMessage(from, to);

            message.Subject = "Using the new SMTP client.";
            message.Body = "<html><boby><H1>this is a test text</H1></boby></html>";
            message.IsBodyHtml = true;

            SmtpClient client = new SmtpClient("smtp.timeweb.ru");
            client.EnableSsl = true;
            client.UseDefaultCredentials = false;
            client.Credentials = new System.Net.NetworkCredential("bot@autodrilling.ru", "xHhgwZ4D");

            client.Send(message);
        }
    }
}