I just use a unique address for each service. Any email that gets leaked or is getting unsubscribe resistant spam is added to /etc/postfix/denied_recipients :)

Appending "+label" to the username part of an email address is legal and will be delivered to the username mailbox.

Doesn’t sound like a very fun hobby, TBH.

no the op, but I find great joy in looking though who sends me spam (based on the unique email used to sign up for each service)

I think it scratches a similar itch to putting up a game camera to see what sort of vermin are running around in your back yard.

You inevitably catch LexisNexis shitting in your herb garden and leaving squirrel carcasses lying about…