public void SendEmail(User[] recipients, string senderName, string subject, string messageBody) { var mailMessage = new MimeMessage(); ParameterRepository parameterRepository = new ParameterRepository(); string smtpEmail = parameterRepository.FindParameterValueByName("SMTP_EMAIL"); string smtpHost = parameterRepository.FindParameterValueByName("SMTP_HOST"); int smtpPort = Convert.ToInt32(parameterRepository.FindParameterValueByName("SMTP_PORT")); string smtpPassword = parameterRepository.FindParameterValueByName("SMTP_PASSWORD"); mailMessage.From.Add(new MailboxAddress(senderName, smtpEmail)); foreach (User recipient in recipients) { mailMessage.To.Add( new MailboxAddress( $"{recipient.FirstName} {recipient.LastName}", recipient.Email) ); } mailMessage.Subject = subject; mailMessage.Body = new TextPart("plan") { Text = messageBody }; using (var client = new SmtpClient()) { client.Connect(smtpHost, smtpPort, true); client.Authenticate(smtpEmail, smtpPassword); client.Send(mailMessage); client.Disconnect(true); } }