k9 mail-delete gmail messages from server?

[dmd35]

Is there a way when I open my outlook, I don't need to see emails again. I have been double deleting in k9-once from inbox & once from trash folder and emails are still appearing in outlook.

The settings I have are:
sync messages from-anytime
when I delete a message-delete from server
expunge message-immed after delete
sync remote deletions is ck -remove messages when delted on server
a lot of these settings seem duplicious

thanks in advance