Proton, why don’t you understand how significant this is? Why have you not put it on your road map? Why have you not fixed it? Or are you using outlook for your own email?

Huge issue for me, it's quite ridiculous that when I send an email I expose a part of my credentials to the world.

I would really like to keep my primary account name hidden and make it the only one that can be used to log in, eliminating the presence of addresses directing to my account in the wild. And, I prefer to use my extra addresses with Plus rather than random aliases!

+1

One would expected this feature to be there. Adding an option to choose which aliases can be used to log in (just make sure that one has to remain active) is logical approach. Dear Proton team - please make it real ;)

This is the reason I changed to proton (just after that I realized this option wasn't available). For me it was obvious, if I can create aliases, I can't login with them, just with my main account.

Yes, if someone knows that I use Proton (by looking at MX record on DNS for example) then it's super easy to guess my Proton's login email address / username based on my real name.

2FA and unique, complex and long password is the key, yeah. But, I would feel a lot safer knowing that no one is even trying to log into my account. Disabling login from all aliases except a single one that I never use anywhere would feel awesome. Like some other users said, Outlook and multiple other mail services are already doing it, so it would feel great to have it here too!

Would be really helpful to add this feature...and would hope a very simple fix!

Hi is there any update on this from Proton?

There simply needs to be a toggle switch in Settings "allow logging in with aliases".

When disabled, only the main account username would be accepted as a username for logging in -- not any of the additional created e-mail addresses.

Many users employ the same tactic as the OP in not revealing their permanent master username to anyone, and only e-mailing others using additional addresses.

Everyone SHOULD have a strong password and 2FA turned on -- but it's even better if potential attackers don't even know your username on top of that!

will be very useful and more secure for own account protonmail, so also if alias will get exposed, hackers o attacker will need the primary address protonmail for get into account and the password for who don’t have yubikey or can’t permit it.

thank you for your understanding
i count on you

Holy guacamole! this isn't already a feature?!

Feeling vulnerable all of a sudden

this issue is also related: https://protonmail.uservoice.com/forums/935538-accounts-payments/suggestions/31027744-only-allow-login-with-single-main-address-username

Please add this feature!

Is there any Update on this? Really looking forward to this change.

Proton, can you please implement this?

I have 2FA enabled. hide-my-email-aliases do not work exactly the way I want them to. So, I still to use my additional addresses. But all my additional addresses can login using the same password. not good. i need to use these additional emails to send and receive emails but also be unable to login using that email additional email address. I do not give out my account email address I used to create my account and upgrade to Mail Plus. I am tempted to get Proton Unlimited but things like this is the main reason I have not.

Really looking forward to it.

I would like to see the same thing. If I could create an account with a primary email address that I give to nobody, then have an email alias that I use every day but which can't be used to log in, I would feel that my account was more secure. Please consider including this option, thank you.

I was surprised to discover that, when I create a new email address, it functions as a username for login purposes.

I went out of my way to create a strong sequence of characters as my username.
If I want to create a more convenient email address to hand out to some people, I don't want that guessable string to function as a username.

This weakness means that I never create additional email addresses.