So could the plural of you provide some more detail on those 29 rules that don't work?
The "plural" of us is our company, which sometimes, I, as a singular, speak on behalf of and this one company (singular again) but with a few (plural) employees has several departments. ;-)
We'd set up Rules that look for "from", "subject" or "content", even some of them have "to" and if the query would be met the Apple mail client (should) forward those email to a specified folder.
As an example; if in the "subject" line appears "business registration" the mail would automatically move from the inbox to business registration folder.
Then again, if the mail comes "from" Peter or
phd@doctorate.com, then this mail would move straight to our associates folder.
Is there anything wrong with those rules? These are all just normal options we use, provided within Apple' Mail client. I (singular again) promise we (plural, because potentially it's not just me) didn't even tweak the Mac or its Mail program. ;-)
What a pity the system, as we had it set up under Thunderbird on Windows, isn't available for a Mac. As with so many others.
Should you personally (or one of your colleagues) have to to with Apple, maybe you can pick up on this one? It's only one!
What I (personally) believe is that a man should only talk about something if he knows and only then he has a chance to provide. Thus, to provide something without knowing is a bit more than cheap because it would be only a pretend and that is exactly what Apple is trying to do on so many occasions. It would be so easy to follow if only Apple would check on what it believes it knows. In other words, Apple would need to give up a part of its super arrogance and claim to be "god" like.
The good thing on all of this is that at the end it will be the people who will tell Apple who Apple really is, despite of Apple' ongoing attempt to tell the people. Usually a cow is only getting branded once.
Enjoy a great day