Dart

Explicitly Begin a POP3 Session

Demonstrates the Chilkat MailMan.Pop3BeginSession method, which explicitly begins a POP3 session by connecting to the POP3 server and authenticating using the current POP3 property settings. Calling it is optional. This example begins a session, performs a mailbox operation, and ends the session.

Background: Pop3BeginSession combines connecting and authenticating into one call. Chilkat does this automatically when a mailbox operation needs it, so the value of calling it explicitly is control: you open one session, perform several operations against it, and close it with Pop3EndSession — avoiding repeated connect/authenticate round trips and keeping deletion marks within a single, well-defined session.

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Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // Demonstrates the MailMan.Pop3BeginSession method, which explicitly begins a POP3 session
  // by connecting to the POP3 server and authenticating using the current POP3 property
  // settings.

  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';

  // Explicitly begin the POP3 session (connect + authenticate).

  try {
    mailman.pop3BeginSession();
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Perform one or more mailbox operations within this single session.
  print('Mailbox count: ${mailman.getMailboxCount()}');

  // End the session when finished.
  try {
    mailman.pop3EndSession();
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  print('POP3 session completed.');
}