<?php
$HOST = '';
$USERNAME = '';
$PASSWORD = '';

$mbox = NULL;
$mbox = imap_open("{{$HOST}:143}INBOX/24h", $USERNAME, $PASSWORD);

$headers = imap_headers($mbox);

$deleted = 0;

if ($headers == false) {
    echo "Call failed<br />\n";
} else {
    for ($i = 0; $i<count($headers); $i++) {
        $msgid = $i+1;

        if (preg_match("/Gprotector V2 Servic/", $headers[$i])) {
            imap_delete($mbox, $msgid);
            $deleted++;
        }
        //echo "ID: $msgid -> {$headers[$i]}<br />\n";
    }
}

print("Deleted $deleted mails\n");

imap_close($mbox);
?>