I researched this stuff a LOT. I originally only knew about anonaddy but it’s a pain to set up self hosted. There’s a lot of options but I really like the proton setup: proton pass + proton mail. Lets you respond to emails from the fake email created very easily.
My flow is like this: some website asks for my email, proton pass extension suggests a fake email using domain.hash@passinbox.com for example: shoppingwebsite.1c8sn@passinbox.com
I think it’s the best of all worlds and it’s why I switched from bitwarden as the flow is way faster and easier to use. And it’s a cinch to respond to emails from proton mail.