gmail also puts mails from mailing lists into spam, despite repeated "not spam" tagging. Wondering whether mail getting flagged as spam is even a problem anymore as people get used to erratic results, at which point we can get rid of spam filtering, or what's left of it, altogether when on balance it does more harm than good, such as preventing SMTP self-hosting.
And yet I continue to get "Walmart Confirmation Receipt" or "Verizon Confirmation Receipt" all coming from addresses like "verizon_info_nlAT2Q7uf0d@zfgfdyyqsckxbvwg.linenight.com" which means google are't even trying for some.
I see this same behaviour. It's infuriating. At this point, I'd almost rather be able to disable all their spam filtering and simply run an App Script, or email client with its own rules that then syncs changes back to the server.