How to get all emails of all users in Afterlogic WebMail Pro PHP

I want to access all emails in system regardless of selected user email, I will add —SELECT ALL— in dropdown.

Is there a option to access all the email addresses from a central control panel regardless selected email in dropdown enter image description here?

I have added option in dropdown —SELECT ALL—[enter image description here](https://i.sstatic.net/kEh6dK4b.png)