Cannot use Folder ID filter when reading emails from API

[boCyrill]

Hi All, need your help please.
I am working on a script that will automatically do some stuffs when an email address does not exist and I receive this bounce notification 'Undelivered Mail Returned to Sender'
I have a filter in EspoCRM that will automatically move these emails to the folder "Undelivered" as you can see in the email and it works perfectly.

When I try to read the emails from the API it works great with this code.

$where = ["dateTime" => true, 'type' => "after", "attribute" => "dateSent", "value" => '2020-06-18', "timeZone" => "UTC"];
$where2 = ['type' => "equals", "attribute" => "name", "value" => 'Undelivered Mail Returned to Sender'];
$result = $client->request('GET', 'Email', ['order' => 'desc', "orderBy" => "createdAt", "offset" => 0, "maxSize" => 200, "where" => [$where2, $where]]);
echo "<pre>"; var_dump($result); echo "</pre>";exit; 

Now When I try to only load email from "Undelivered" folder as shown by the following line, it returns an empty result

$result = $client->request('GET', 'Email', [[I][U][B]'folderId' => '5f3b77cde265a6a0b',[/B][/U][/I] 'order' => 'desc', "orderBy" => "createdAt", "offset" => 0, "maxSize" => 200, "where" => [$where2, $where]]);
echo "<pre>"; var_dump($result); echo "</pre>";exit;

It look like this issue is more related to the API User because when I copy the URL generated by the EspoApiClient and paste that into a tab of a browser where am logged into the the CRM, I have all my data as expected

Any suggestion? all email related permissions are set for this user