Yup, it's not just an inconvenience, it's a non starter.
I'm still using it for my small business needs, very small, but do have 3 email accounts just to cover the bases for back up etc.
The only way it works is by me going on my android outlook app before opening pc and clearing all the junk/ spam.
The app works great, sorts priority and non priority mail across all accounts and enables deletion in a couple short steps, leaving just the necessary messages.
Works for me because I only need PC, for document production, a couple times a week.