JavaScript

Determine the Number of Unseen Email Messages

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

var success = false;

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

var imap = new CkImap();

// 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 CkMessageSet();
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();