public BlobStorageAppender()
        {
            _events = new ConcurrentQueue<Tuple<CloudBlockBlob, LoggingEvent>>();

            ConfigurationProvider = new WebConfigProvider();

            _writeThread = new Thread(WriteQueuedEvents);
            _writeThread.Start();
        }
 public EmailAppender()
 {
     ConfigurationProvider = new WebConfigProvider();
     Emailer = new SendGridEmailer(ConfigurationProvider);
 }