I've been using email aliases since Microsoft introduced them years ago. These were great because I could give certain businesses an alternate address rather than my primary. Their emails would go into that address's folder and I could interact with them just like any other email in my primary account.
Recently - within the past month or so, I've noticed zero emails arriving for my alias address when I normally got a few a week. Then I realized they were arriving in my primary inbox rather than their specified folder and I don't know why.
Does anyone else use email aliases and has anyone else seen this error and found a solution? I did a very quick review of posts here and didn't see anything that appeared to be related to my issue. Unfortunately, I wasn't able to figure out the right way to frame the question for the Great Google Machine to provide an answer.