public async Task SendMail(string subject, string content, MailType type, IEnumerable <string> recipients)
{
// Create a new mail reqeust.
var request = new MailRequest()
{
Subject = subject, Content = content, Type = type
};
request.Emails.AddRange(recipients);
// Send the request to mail server
var reply = await _grpcClinet.SendMailAsync(request);
_logger.Log(LogLevel.Information, $"Received reply {reply}");
}