Java

Determine the Number of Unseen Email Messages

Demonstrates how to determine how many unseen messages exist in an email account on an IMAP server. Chilkat2 Java

import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Imap;
import com.chilkatsoft.chilkat2.MessageSet;

public class ChilkatExample {

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

        Imap imap = new Imap();

        // Connect to an IMAP server.
        // Use TLS
        imap.setSsl(true);
        imap.setPort(993);
        try {
            imap.connect("imap.example.com");

            // Login
            imap.login("***", "***");

            // Select an IMAP mailbox
            imap.selectMailbox("Inbox");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // After selecting the mailbox. the total number of emails
        // is immediately available:
        int totalNum = imap.getNumMessages();
        System.out.println("Num messages = " + totalNum);

        // To determine the number of unseen messages, a call
        // to Search is required, which returns the set of UIDs
        // of all unseen messages.

        // We can choose to fetch UIDs or sequence numbers.
        boolean fetchUids = true;
        MessageSet messageSet = new MessageSet();
        try {
            imap.queryMbx("UNSEEN", fetchUids, messageSet);
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        long numUnseen = messageSet.getCount();
        System.out.println(numUnseen);

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

        // Display the UIDs
        int i = 0;
        while (i < messageSet.getCount()) {
            System.out.println(messageSet.getId(i));
            i = i + 1;
        }

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