(Java) Download Unread Email from IMAP Mailbox

Download unread email messages from an IMAP mailbox.

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("admin@chilkatsoft.com","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;
    boolean fetchUids = true;

    // Find emails marked as seen or not already seen:
    String seenSearch = "SEEN";
    String notSeenSearch = "NOT SEEN";

    // Get the set of unseen message UIDs
    messageSet = imap.Search(notSeenSearch,fetchUids);
    if (imap.get_LastMethodSuccess() == false) {
        System.out.println(imap.lastErrorText());
        return;
        }

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

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

    // Display the Subject and From of each email.
    int i = 0;
    int numEmails = bundle.get_MessageCount();
    while (i < numEmails) {
        CkEmail email = bundle.GetEmail(i);

        System.out.println(email.getHeaderField("Date"));
        System.out.println(email.subject());
        System.out.println(email.ck_from());
        System.out.println("--");

        i = i+1;
        }

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