When running the PHP code below I get only one folder, the INBOX.
<?php
$server = '{outlook.office365.com:995/pop3/ssl/novalidate-cert}';
$connection = imap_open($server, 'user@domain.com', 'XXXXX');
$mailboxes = imap_list($connection, $server, '*');
var_dump($mailboxes);
?>
Ouput:
array(1) { [0]=> string(57) "{outlook.office365.com:995/pop3/ssl/novalidate- cert}INBOX" }
While there do exist multiple standard and custom folders. In fact, I want to move emails from the INBOX to the trash folder. But I can not even find the correct name of the trash folder.
Folders are not available in the POP3 protocol. You must connect using IMAP.