This would be extremely helpful

Any way to bump this to the top of trhe queue or get a response that it's never going to be on the roadmap?

This functionality is integral for my work flow as well. Downloading the email works, but is unwieldy and adds extra steps I don't have to do in Outlook.

Big one for us

We use the drag and drop feature to drag emails in Outlook to a file explorer folder. It is an integral part of my work flow.

Agreed.. and I would think the dragging of emails to desktops/file folders would also enable dragging emails to OneNote (and probably other apps), which is extremely helpful. I regularly drag Outlook emails to both OneNote and file folders.

I understand that this may only be possible from Missive desktop, but that would at least be something.

Yes, very important.