Fetch Oldest/Newest IMAP Email

Emails may be downloaded by sequence number. Assuming the selected mailbox is not empty, the oldest email is at sequence number 1, and the newest email is at sequence number N. The FetchSingle method may be used to download by sequence number.

 Chilkat Java Library Downloads for Windows, Linux, and MAC OS X

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();

    boolean success;

    //  Anything unlocks the component and begins a fully-functional 30-day trial.
    success = imap.UnlockComponent("Anything for 30-day trial");
    if (success != true) {
        System.out.println(imap.lastErrorText());
        return;
    }

    //  Connect to an IMAP server.
    success = imap.Connect("mail.testemail.net");
    if (success != true) {
        System.out.println(imap.lastErrorText());
        return;
    }

    //  Login
    success = imap.Login("***","***");
    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;
    }

    //  After selecting a mailbox, the NumMessages property
    //  contains the number of emails in the selected mailbox.
    int n;
    n = imap.get_NumMessages();

    if (n > 0) {

        //  The oldest email is always at sequence number 1.
        boolean isUid;
        isUid = false;

        CkEmail oldestEmail;
        oldestEmail = imap.FetchSingle(1,isUid);
        if (!(oldestEmail == null )) {

            //  Display the From and Subject
            System.out.println(oldestEmail.fromAddress());
            System.out.println(oldestEmail.subject());

            System.out.println("--");

        }

        //  The newest email is at sequence number N:
        CkEmail newestEmail;
        newestEmail = imap.FetchSingle(n,isUid);
        if (!(newestEmail == null )) {

            //  Display the From and Subject
            System.out.println(newestEmail.fromAddress());
            System.out.println(newestEmail.subject());

        }

    }

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