Duplicate messages in wrong inboxes

Question

We our main inbox we have 3 separate email boxes (home - which is main address from AT&T, my address and my wife's address). Recently we have been gettng mail in the right inbox but also the main address even though it is addressed to the sub email address. We tried one of the suggestions of adding the rule that if the "to" is equal to the addressee it goes to that mail box but now we are getting spam to that box. Does anyone else have the same problem or know of a fix? I wish Apple would add a feature to be able to learn spam that we mark as spam and trash and delete it automatcally since AT&T can't seem to due their job right.

Answer 1

Report the names of the files and folders present at the first level of the ~/Library/Mail/ folder.
In order to post the exact file names and avoid typing mistakes, proceed as follows. In the Finder, go to ~/Library/Mail/. With that folder open, if you’re looking at it in View > as List mode, first collapse any expanded folders so that the Finder only shows the files and folders at the first level of ~/Library/Mail/. Now, do Edit > Select All (⌘A), then Edit > Copy (⌘C), and paste it in your reply to this post.
Before actually posting that information, you may edit it so that the file/folder names do not reveal any details you wish to keep private, e.g. you may replace any real username with “username” to hide your real email address if you wish; similarly, you may disguise any domain names you don’t want to be revealed. Try to be consistent in how you disguise those details, though, as we may need to refer to them in subsequent posts.
We tried one of the suggestions of adding the rule that if the
"to" is equal to the addressee it goes to that mail box
Which suggestions? If you set up a rule that moves incoming messages back to Inbox, you’re potentially creating an infinite loop that Mail cannot handle properly...
I wish Apple would add a feature to be able to learn spam that we
mark as spam and trash and delete it automatcally
What do you mean? Mail does have that feature. It’s the junk filter.
Note: For those not familiarized with the ~/ notation, it refers to the user’s home folder, i.e. ~/Library is the Library folder within the user’s home folder.