Not sure if this would help but for many years i have used some third party software called Mailwasher - it was developed in NZ around 20 years ago.  It links up with your mail server(s) without you being in the mail account and learns as you use it what is spam and automatically flags it up for deletion next time, then it just clicking on the 'sponge' to tell  it to delete or 'wash' all the 'dirty mail'. You can flag up either individuals or domains for the black lists or as friends.  Mailwasher gives me an overview of all my accounts and i can delete anything that i don't want to get through to outlook.