[halapro]

This is why I love Apple's Hide My Email. I use it ALL the time and the unsubscribe button is always there. It's not the most polished interface, but it works perfectly.

Also, for any subscription for which I don't use HME, I will immediately "mark as spam" any minimally-spammy email I get. The ones described in the article would be insta-marked due to the lack of Unsubscribe button.

[EA-3167]

It’s fantastic, and also lets you track exactly who leaked your email.

[specproc]

Firefox relay also good for this sort of thing.

[robinhood]

And 1password which works fantastically with Fastmail with their Masked emails feature.