The best advice I can share is to have two email accounts: one for the companies to abuse with unsolicited marking spam and the one receipt email they legitimately sent, and another for friends and family to actually be able to reach you. Never give companies the latter.
Email Unsubscribe Services Don’t Really Work. Follow This (Free) Advice Instead.
Email unsubscribe tools promise to eliminate unwanted emails, but our testing showed they rarely deliver. You’re better off making inbox rules yourself.
nytimes.com