My stepwise plan:

1. Gather all the email accounts I have.
2. Long term: try to track where each email is used in critical services for communication purposes (banks, financial apps, government services)
3. Short term: go through your email dumps and create filters for common spammers. Unsubscribe if possible.
4. Create filters by common marketing patterns. Examples: too much punctuation, too many emojis, too many images, too many links, some marketing keywords like “hurry”, “offer”, “saving”
5. Create rules for categorizing the emails. Like Login Security/Account info, Statements, Bills/Receipts, promotions (that come from a important site), etc.

What I do:

• Rarely give out my email (I use aliases everywhere)
• Don’t attempt to sort incoming email (it’s a fool’s errand)
• Email search is my friend

The result is a cluttered inbox, sure, and that’s not “minimal”. But it does minimize the impact on my psychology. I don’t need another chore, and email sorting is an infinite chore.