(Java) List Email UIDs

List the UIDs of each email in a mailbox.

Chilkat Java Downloads Java Libs for Windows, MacOS, Linux, Alpine Linux Java Libs for Android

import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    CkImap imap = new CkImap();

    // This example assumes Chilkat Imap to have been previously unlocked.
    // See Unlock Imap for sample code.

    // Connect to an IMAP server.
    // Use TLS
    imap.put_Ssl(true);
    imap.put_Port(993);
    boolean success = imap.Connect("MY-IMAP-DOMAIN");
    if (success != true) {
        System.out.println(imap.lastErrorText());
        return;
        }

    // Login
    success = imap.Login("MY-IMAP-LOGIN","MY-IMAP-PASSWORD");
    if (success != true) {
        System.out.println(imap.lastErrorText());
        return;
        }

    // Select an IMAP mailbox
    success = imap.SelectMailbox("Inbox");
    if (success != true) {
        System.out.println(imap.lastErrorText());
        return;
        }

    CkMessageSet messageSet;
    // We can choose to fetch UIDs or sequence numbers.
    boolean fetchUids = true;

    // Get the message IDs of all the emails in the mailbox
    messageSet = imap.Search("ALL",fetchUids);
    if (imap.get_LastMethodSuccess() != true) {
        System.out.println(imap.lastErrorText());
        return;
        }

    int i = 0;
    int n = messageSet.get_Count();
    while (i < n) {
        System.out.println(messageSet.GetId(i));
        i = i+1;
        }

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