Dart

Delete a POP3 Message via an Email Object

Demonstrates the Chilkat MailMan.DeleteEmail method, which deletes a POP3 message using the UIDL stored in the X-UIDL header of an Email object. The email must contain an X-UIDL header, which it does after being fetched from the server. This example fetches a message and then deletes it.

Background: When Chilkat downloads a POP3 message it records the server UIDL in an X-UIDL header on the Email object. DeleteEmail uses that header to tell the server which message to remove — a natural "process then delete" flow: fetch a message, act on it, then delete it. As always in POP3, the deletion is only committed when the session ends (unless ImmediateDelete is set).

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Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // Demonstrates the MailMan.DeleteEmail method, which deletes a POP3 message using the UIDL
  // stored in the X-UIDL header of an Email object.  The email must contain an X-UIDL header
  // (as it does after being fetched from the server).

  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 a message (headers are enough; the X-UIDL header identifies it on the server).
  final email = CkEmail();

  try {
    mailman.fetchOne(true, 0, 1, email);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Delete that message using its X-UIDL header.
  try {
    mailman.deleteEmail(email);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

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

  print('Deleted the email 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.
}