Only allow login with the username/main address, not with every address.
Do not allow that you can log into the account with every address.
Perfect would be if you would have the choice what address can be used in order to log into your account.
With the current way you have to give away your login username in order to send emails. Hiding the username from the public would be an advantage, since they would have to guess your username and the password. Not only one of them.
Mau Z commented
This is honestly so bad! If i have 10 aliasses then the chance of someone attemting an attack is literally 10 times as high!
I was debating what mail service to switch to and ended up moving to Proton. After paying for Mail Plus and experimenting with aliases I noticed that I could sign in with any aliase I made. This gives account owners one less line of security for their accounts.
Outlook offers this a togglable feature and with iCloud mail you can only sign in using your mail iCloud email. How come these free services offer better account security when it comes to handling aliases but Proton who shouts about security and privacy but doesnt support this baffels me.
Katarzyna Ferreira commented
I feel this is crazy that it's not an option, we create aliases to keep our email private. Especially now when I use the same login to get into proton pass and drive, I think this is really critical and urgent. Please consider this.
I didn't realize login was allowed with aliases until I saw this suggestion. This is scary. I don't see any benefit to the user to be able to login with say 5 different email addresses for the same account. If they are the real account owner, they should have no issue securely storing the credentials for the main/login account (whether this is the original one, or something chosen as others have suggested). Allowing login from any alias just increases the likelihood of an unauthorized party gaining access.
This! Being able to select which username or email address used to log in would be a beneficial security feature. Please implement this!
This is a very important and critical security feature to my setup. It is also a highly requested feature judging by the number of votes. Please review this and plan on adding it. As other have mentioned Outlook already offers this feature so it seems doable.
This is a feature I use wtih my Outlook account. I was brute forced with my email address that was compromised by a 3rd party data breach. Thankfully 2FA stopped them but after the attempt I looking into their security features and was able to disable login capabilities from the account that they were using.
Being able to deselect aliases used for login attempts would enhance security by minimizing attack surfaces. Please prioritize this feature.
Please implement this feature!
Reading some of the posts below that don't think this is valuable, from experience, it worked for my account. I had an account that was consistently attempted to be logged in from hackers. I disabled that alias from login and the attempts disappeared. so it does work.
For additional security, I would like to have the ability to disable all the alias email address from the ability to sign into the account. I was planning to use the primary email address as the admin address and not send or distribute email from that address. This reduces the risk of hacking accounts. ideally, allow the user to allow login from the username only.
Outlook.com has a similar feature.
Aaron Smith commented
I have reported that the most important thing is working
Yup, I can even login with my domain address. That's no good. You can say 2FA is there but why even give attackers a chance to begin with. You can take outlook as an example. If you go to account info > sign in preferences > you can uncheck aliases, you don't want to login with.
Joe Q commented
Username should not be an email address.
This added security could be a paid account feature.
Matthew Malek commented
I agree on the part of this assuming we were to be able to change which email was the main address after we purchase the package.
@ProtonmailTeam someone should care a bit about curating the feature request lists. This idea has several duplicates:
Gordon Runkle commented
Having login credentials that are private and not the same as our email address removes an entire attack face from play and should be a top priority.
I agree with the original poster too!
Having a different login instead of the email you are using (who is public) is not obscurity but it's another 2FA much more convenient and simple to use than the one protonmail provides now.
I'm considering more than publishing your login in the public domain is a security issue!
It potentially exposes you to a bot attack.
Having 5 email aliases means potentially having 5 public logins published for the same account.
And having this feature + the 2FA from protonmail will be 3FA!
This feature is definitely missing for me!
John Smith commented
security by obscurity
The punisher commented
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Shreyas Purohit commented
I am not sure how much this helps. You have login password, then 2FA and then another mailbox password if you have it enabled. Its probably more useful to increase your password length by 5 characters than try to hide your email. Security by obscurity does not go a long way. I would rather see a feature that allows you to enter a second set of passwords that will open an virtual inbox with empty or some predefined emails which can be used in coerced situations.