Only show unanswered emails / Hide replied emails

I’m trying to set up Outlook so that my Inbox only shows emails that I have not replied to yet.

What I would like is this:

When I receive an email, it should appear in my Inbox as usual. But once I reply to that email, I want it to automatically disappear from my Inbox view. I do not want the email to be deleted or archived. I only want it to be hidden from this specific Inbox view. This way i can keep a clear overview of what needs answering. 

So I am not looking for an “unread emails” filter. I specifically want to show unreplied emails.

I had this working before and it was fantastic for keeping my Inbox organized. My Inbox basically worked as a list of emails I still needed to respond to. Unfortunately, it recently stopped working, and I cannot figure out how to set it up again.

Does anyone know how to recreate this setup?

Any help would be greatly appreciated.

Thanks in advance!