Slightly strange one potentially.
I had to change mail hosts etc and it made sense creating a new profile under Mail (control panel)
I noticed despite ticking the box to ask which profile to load, Outlook did not display the new profile. So I created a new profile from the choose profile screen when launching Outlook.
That profile did not show under Mail however it clearly worked and I could create my IMAP accounts within it.
Now due to some cleaning up, I decided I want to delete the old Outlook profile which is in Mail, and also the new one to then create a fresh new one and only one profile.
Deleted "Outlook" from Mail... but it still is selectable in the dropdown list in Outlook when launching.
Whats more annoying is the temp one I created via the outlook choose a profile screen is also there. So how the heck do I delete the new profile given it doesnt show under Mail (though works perfectly currently) and how do I get rid of the original Outlook profile despite having deleted the Outlook profile under Mail in control panel?
I have confirmed currently there are NO profiles under Mail in Control Panel.