Mail | 
public abstract Task<int> GetMessageCountAsync( CancellationToken cancellationToken = default )
| Exception | Condition | 
|---|---|
| ObjectDisposedException | The MailSpool has been disposed. | 
| ServiceNotConnectedException | The MailSpool is not connected. | 
| ServiceNotAuthenticatedException | The MailSpool is not authenticated. | 
| OperationCanceledException | The operation was canceled via the cancellation token. | 
| IOException | An I/O error occurred. | 
| CommandException | The command failed. | 
| ProtocolException | A protocol error occurred. |