How to send purge message with node-red-node-email

Hi

I am deleting some mail with the node-red-node-email, but the mails is still there, just hidden and with a label "Deleting/Deleted".
If I want to delete the message from the server, I need to send a "Purge message" (imap_expurge) how do I do that in Node Red?
PHP: imap_expunge - Manual