Node.js

Determine the Number of Unseen Email Messages

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

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    var imap = new chilkat.Imap();

    // Connect to an IMAP server.
    // Use TLS
    imap.Ssl = true;
    imap.Port = 993;
    success = imap.Connect("imap.example.com");
    if (success == false) {
        console.log(imap.LastErrorText);
        return;
    }

    // Login
    success = imap.Login("***","***");
    if (success == false) {
        console.log(imap.LastErrorText);
        return;
    }

    // Select an IMAP mailbox
    success = imap.SelectMailbox("Inbox");
    if (success == false) {
        console.log(imap.LastErrorText);
        return;
    }

    // After selecting the mailbox. the total number of emails
    // is immediately available:
    var totalNum = imap.NumMessages;
    console.log("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.
    var fetchUids = true;
    var messageSet = new chilkat.MessageSet();
    success = imap.QueryMbx("UNSEEN",fetchUids,messageSet);
    if (success == false) {
        console.log(imap.LastErrorText);
        return;
    }

    var numUnseen = messageSet.Count;
    console.log(numUnseen);

    console.log("UIDs ----");

    // Display the UIDs
    var i = 0;
    while (i < messageSet.Count) {
        console.log(messageSet.GetId(i));
        i = i+1;
    }

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

}

chilkatExample();