Dart Requires Chilkat v11.0.0+

IMAP STARTTLS (Explicit TLS/SSL)

The StartTls property is set to force the Connect method to automatically convert an connection to TLS/SSL via the STARTTLS IMAP command.

This is also known as "explicit TLS/SSL" as opposed to "implicit TLS/SSL". With implicit TLS/SSL, the IMAP client connects on the well-known IMAP TLS/SSL port 993 and the secure channel is immediately established. With explicit TLS/SSL, the IMAP client connects on the typical non-secure port (143 usually) and the converts the connection via the STARTTLS command.

Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // This example assumes the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  final imap = CkImap();

  // Indicate that STARTTLS should be used to convert
  // to a secure TLS/SSL connection:
  imap.startTls = true;
  imap.port = 143;

  // Connect to an IMAP server and convert the connection
  // to TLS/SSL via STARTTLS.
  try {
    imap.connect('imap.example.com');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // The remainder of this example is the same as for 
  // non-TLS/SSL...

  // Login
  try {
    imap.login('myLogin', 'myPassword');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Select an IMAP mailbox
  try {
    imap.selectMailbox('Inbox');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Get the message IDs of all the emails in the mailbox
  final fetchUids = true;
  final messageSet = CkMessageSet();
  try {
    imap.queryMbx('ALL', fetchUids, messageSet);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Fetch the emails into a bundle object:
  final bundle = CkEmailBundle();
  final headersOnly = false;
  try {
    imap.fetchMsgSet(headersOnly, messageSet, bundle);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Loop over the bundle and display the FROM and SUBJECT of each.
  final email = CkEmail();
  var i = 0;
  final numEmails = bundle.messageCount;
  while (i < numEmails) {
    bundle.emailAt(i, email);

    print(email.from);
    print(email.subject);
    print('--');
    i++;
  }

  // Disconnect from the IMAP server.
  imap.disconnect();
}