[warp]

I'm using the Hey approach in Fastmail, so my main folders are Inbox and Screener, with a filter like this:

Matches NOT fromin:contacts -> Move to Screener

I'll check the Screener less frequently, and whenever I feel like it I'll take a message from it and use Actions -> Add rule from message.. and send messages from that sender to a Newsletter folder.

I still get lots of crap in the Screener, but then again I don't really use e-mail to communicate with humans, so in a sense all e-mail is automated nonsense from systems where I have some kind of user account.