I have a catch-all email domain, and this is exactly what I do. Walmart gets “walmart@example.com”, Target gets “target@example.com”, etc… All of them go to the same inbox, so I always know which email address they think I have. If I start getting spam addressed to walmart@example.com, I know Walmart sold my info. I can just filter anything addressed to that account straight into my spam folder.
Make your first or last name the name of the website so you know who sold your email address to spammers.
I have a catch-all email domain, and this is exactly what I do. Walmart gets “walmart@example.com”, Target gets “target@example.com”, etc… All of them go to the same inbox, so I always know which email address they think I have. If I start getting spam addressed to walmart@example.com, I know Walmart sold my info. I can just filter anything addressed to that account straight into my spam folder.