Dart

Delete a Bundle of POP3 Messages

Demonstrates the Chilkat MailMan.DeleteBundle method, which deletes POP3 messages using the UIDLs stored in the X-UIDL headers of the Email objects in an EmailBundle. An email without an X-UIDL header is skipped. This example fetches all messages and deletes them.

Background: DeleteBundle is the batch version of DeleteEmail: it marks every message in a downloaded bundle for deletion in one call. A typical "download and clear the mailbox" workflow is to fetch all messages, process them, then delete the whole bundle. Because a bundle can be filtered or built selectively, you can also delete just the subset you no longer need. The deletions commit when the POP3 session ends.

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Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // Demonstrates the MailMan.DeleteBundle method, which deletes POP3 messages using the UIDLs
  // stored in the X-UIDL headers of the Email objects in an EmailBundle.  An email without an
  // X-UIDL header is skipped.

  final mailman = CkMailMan();

  // Configure the POP3 server connection.
  mailman.mailHost = 'pop.example.com';
  mailman.mailPort = 995;
  mailman.popSsl = true;
  mailman.popUsername = 'user@example.com';
  mailman.popPassword = 'myPassword';

  // Fetch all messages (headers are enough; each carries an X-UIDL header).
  final bundle = CkEmailBundle();

  try {
    mailman.fetchAll(true, true, 0, bundle);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Delete every message in the bundle.
  try {
    mailman.deleteBundle(bundle);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Unless the ImmediateDelete property is set to true, the messages are only marked for
  // deletion.  End the POP3 session (which sends the QUIT command) to commit the deletions.
  try {
    mailman.pop3EndSession();
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  print('Deleted ${bundle.messageCount} messages from the POP3 server.');

  // Note: Explicitly connecting/authenticating is optional.  Chilkat MailMan automatically
  // connects and authenticates -- using the property settings above -- whenever a server
  // operation requires it.  Calling the explicit connect/authenticate methods can still be
  // helpful to determine whether a failure occurs while connecting or while authenticating.
}