Dart Requires Chilkat v11.0.0+

How to Copy IMAP Mail to another IMAP Server

Demonstrates how to copy the entire contents of an IMAP mailbox to another IMAP server. Dart

import 'package:chilkat/chilkat.dart';

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

  final imapSrc = CkImap();

  // Connect to our source IMAP server.
  try {
    imapSrc.connect('imap.example.com');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Login to the source IMAP server
  try {
    imapSrc.login('admin@chilkatsoft.com', 'myPassword');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  final imapDest = CkImap();

  // Connect to our destination IMAP server.
  try {
    imapDest.connect('mail.example-code.com');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Login to the destination IMAP server
  try {
    imapDest.login('myLogin', 'myPassword');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

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

  // After selecting a mailbox, the NumMessages property will
  // be updated to reflect the total number of emails in the mailbox:
  print(imapSrc.numMessages);

  // The emails in the mailbox will always have sequence numbers
  // ranging from 1 to NumMessages.

  // This example will copy the first 10 messages using sequence numbers
  final sbMime = CkStringBuilder();
  for (var seqNum = 1; seqNum <= 10; seqNum++) {
    sbMime.clear();
    try {
      imapSrc.fetchSingleAsMimeSb(seqNum, false, sbMime);
    } on ChilkatException catch (e) {
      print(e.lastErrorText);
      return;
    }

    try {
      imapDest.appendMimeWithFlagsSb('Inbox', sbMime, false, false, false, false);
    } on ChilkatException catch (e) {
      print(e.lastErrorText);
      return;
    }
  }

  // Disconnect from the IMAP servers.
  imapSrc.disconnect();
  imapDest.disconnect();
}