Mail | 
public abstract Task<MetadataCollection> GetMetadataAsync( MetadataOptions options, IEnumerable<MetadataTag> tags, CancellationToken cancellationToken = default )
| Exception | Condition | 
|---|---|
| ArgumentNullException | options is . -or- tags is .  | 
| ObjectDisposedException | The MailStore has been disposed. | 
| ServiceNotConnectedException | The MailStore is not connected. | 
| ServiceNotAuthenticatedException | The MailStore is not authenticated. | 
| NotSupportedException | The folder does not support metadata. | 
| OperationCanceledException | The operation was canceled via the cancellation token. | 
| IOException | An I/O error occurred. | 
| ProtocolException | The server's response contained unexpected tokens. | 
| CommandException | The command failed. |