As a 'ProtonMail Plus' user, I have 5 e-mail addresses that are linked to my personal '@domain.com' plus, the '@protonmail.com' one. I'm only using my '@domain.com' addresses so no one really knows my '@protonmail.com' address. I think it might be interesting to be able to activate or deactivate the login with the addresses we want, so that, in my situation, I can only connect to my account with my '@protonmail.com' address.
As a 'ProtonMail Plus' user, I have 5 e-mail addresses that are linked to my personal '@domain.com' plus, the '@protonmail.com' one. I'm only using my '@domain.com' addresses so no one really knows my '@protonmail.com' address. I think it might be interesting to be able to activate or deactivate the login with the addresses we want, so that, in my situation, I can only connect to my account with my '@protonmail.com' address.