I use proton pass and it generates an alias with a prefix you give it, which helps to recognize what email it is, so this format: <prefix>.<random-generated-part>@passmail.net

So an example could be google.chasing645@passmail.net

I am glad I am using proton. I never give my real email to any website and create an alias for every website. That way, when I ever receive a spam email, I know exactly which company sold my data and I can turn that alias off permanently.

They forgot the last step: delete the promo emails from the company you never signed up for