A single login address
I suggest that if we have multiple addresses/aliases on our account, we should be able to choose which ones we can log in with. That would greatly improve our security and privacy. This is possible on other sites like Outlook, where you can have multiple aliases but choose only one to log in with.
Then we could have one address/alias only for login and it would never be shared with anyone or any website.
Or again, if we have aliases to register on sites that are not trusted, they could never use that address to try to log in to our account.
I think this is something very necessary and useful.
It would be as easy as in the ‘Identity and addresses’ section, where our aliases/addresses are listed, to be able to select which ones we can log in with and which ones we cannot.
I hope my suggestion will be useful for many and can be implemented.
Best regards and thank you very much.