It was an accident but here is how I did it.
I had a temporary job back in early 2000's so I got a short term lease in a different city and opened a PO box at post office. Then I unexpectedly got called back and was slated to return but didn't and neglected to close the PO box and forward mail. I was a road warrior for next 5 or 6 years and seldom at permanent address, so I didn't bother putting in address change back to permanent residence. Instead I got an online mail service (I don't know if was this, but something like this https://www.postscanmail.com/) that opened and scanned mail and I'd read it in browser, download scans, and have important stuff physically forwarded to wherever I was at the time.
Finally that all ended and I got a real address and stopped the online mail receiving. For whatever reason something in that process completely stopped the junk mail to this day and it's wonderful.
I recognize there's value in having a postal system, but in practice almost everything I receive goes straight in the shredder. It's been taken over by spammers. It's another system that provides real value to a lot of people, but seems to only be financially sustainable because of advertising.
Where's the Plan for this Spam?