mail.cs

        public Task SendEmailAsync(string email, string subject, string message)
        {

            var msg = new MimeMessage();
            msg.From.Add(new MailboxAddress(EmailConfig.From, EmailConfig.FromEmail));
            msg.To.Add(new MailboxAddress("", email));
            msg.Subject = subject;
            var bodyBuilder = new BodyBuilder();
            bodyBuilder.HtmlBody = message;

            msg.Body = bodyBuilder.ToMessageBody();

            using (var client = new SmtpClient())
            {
                client.ServerCertificateValidationCallback = (s, c, ch, e) => true;
                client.Connect("smtp.gmail.com", 587);
                client.AuthenticationMechanisms.Remove("XOAUTH2");
                client.Authenticate(EmailConfig.Email, EmailConfig.Password);
                client.Send(msg);
                client.Disconnect(true);
            }
            return Task.FromResult(0);
        }