|  | IMail | 
 Syntax
Syntaxpublic static IList<UniqueId> Append( this IMailFolder folder, IList<MimeMessage> messages, IList<MessageFlags> flags, CancellationToken cancellationToken = default, ITransferProgress progress = null )
 Exceptions
Exceptions| Exception | Condition | 
|---|---|
| ArgumentNullException | messages is . -or- flags is . | 
| ArgumentException | One or more of the messages is null. -or- The number of messages does not match the number of flags. | 
| ObjectDisposedException | The IMailStore has been disposed. | 
| ServiceNotConnectedException | The IMailStore is not connected. | 
| ServiceNotAuthenticatedException | The IMailStore is not authenticated. | 
| FolderNotFoundException | The MailFolder does not exist. | 
| 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. | 
 Remarks
Remarks See Also
See Also