(Java) Delete Email Individually (One at a time) from an IMAP Mailbox

Downloads email from an IMAP mailbox and deletes emails individually (one by one).

Chilkat Java Downloads Java Libs for Windows, MacOS, Linux, Alpine Linux, Solaris 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[])
  {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkImap imap = new CkImap();

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

    // Login
    success = imap.Login("myLogin","myPassword");
    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() == false) {
        System.out.println(imap.lastErrorText());
        return;
        }

    // Fetch the emails into a bundle object:
    CkEmailBundle bundle;
    bundle = imap.FetchBundle(messageSet);
    if (imap.get_LastMethodSuccess() == false) {

        System.out.println(imap.lastErrorText());
        return;
        }

    // To mark a complete set of emails for deletion, call SetFlags:
    success = imap.SetFlags(messageSet,"Deleted",1);
    if (success != true) {
        System.out.println(imap.lastErrorText());
        return;
        }

    // Messages can also be marked for deletion individually:
    // Loop over the bundle and mark each message for deletion.
    int i = 0;
    int numEmails = bundle.get_MessageCount();
    while (i < numEmails) {
        CkEmail email = bundle.GetEmail(i);
        System.out.println(email.ck_from());
        System.out.println(email.subject());

        // To delete this email, set the "Deleted" flag to 1.
        // The email is not actually deleted until Expunge or
        // ExpungeAndClose is called.
        success = imap.SetMailFlag(email,"Deleted",1);
        if (success != true) {
            System.out.println(imap.lastErrorText());
            return;
            }

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

        i = i+1;
        }

    success = imap.ExpungeAndClose();
    if (success != true) {
        System.out.println(imap.lastErrorText());

        return;
        }

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