Using classic Outlook for Windows in business environments
What I learned is that all emails are given a code. I think it's a or b, but it might be other letters. A goes to inbox, b goes to junk. My guess, guess, guess is that for some reason the emails are being miscoded. To be honest, Geek Squad solved this problem for me. I have zero connection to them and pay for an annual subscription. But in this case it worked. He solved the problem in a half hour on the phone.