Determine the Number of Unseen Email Messages

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

Download Chilkat IMAP ActiveX

<?php

$imap = new COM("Chilkat.Imap");

//  Anything unlocks the component and begins a fully-functional 30-day trial.
$success = $imap->UnlockComponent('Anything for 30-day trial');
if ($success != true) {
    print $imap->lastErrorText() . "\n";
    exit;
}

//  Connect to an IMAP server.
$success = $imap->Connect('mail.chilkatsoft.com');
if ($success != true) {
    print $imap->lastErrorText() . "\n";
    exit;
}

//  Login
$success = $imap->Login('***','***');
if ($success != true) {
    print $imap->lastErrorText() . "\n";
    exit;
}

//  Select an IMAP mailbox
$success = $imap->SelectMailbox('Inbox');
if ($success != true) {
    print $imap->lastErrorText() . "\n";
    exit;
}

//  After selecting the mailbox. the total number of emails
//  is immediately available:
$totalNum = $imap->NumMessages;
print $totalNum . "\n";

//  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.
$fetchUids = true;

// messageSet is a Chilkat.MessageSet
$messageSet = $imap->Search('UNSEEN',$fetchUids);
if (is_null($messageSet)) {
    print $imap->lastErrorText() . "\n";
    exit;
}

$numUnseen = $messageSet->Count;
print $numUnseen . "\n";

print 'UIDs ----' . "\n";

//  Display the UIDs

for ($i = 0; $i <= $messageSet->Count - 1; $i++) {
    $msgId = $messageSet->GetId($i);
    print $msgId . "\n";
}

//  Disconnect from the IMAP server.
$imap->Disconnect();


?>