The best thing about this is that it enables you to stop organizing all this paper. I have a little box next to my scanner and everything that is scanned is just getting put on top of the pile. In most cases you never need the original document anyways. But if you need it, you can check Paperless when it was scanned and you will find that document from Feb 2023 in a few seconds.

I can also recommend frigate. It’s an awesome piece of software and it really is what OP wants

You can do most of that without any fancy AI or machine learning: Since you already have your own domain, setup some mail redirects and filter all mails going into them into subfolders. I have a redirect for onlineshopping where all those order confirmation and delivery informations and unwanted newsletters go. I have another I use for creating accounts - all 2FA etc. are going there. And then I have the main mail for actual communication and another redirect for all those interesting substack newsletters and so on.