Proton Pass Beyond Passwords: What Else It Does

Proton Pass is no longer just a password manager: it now also stores credit cards, notes, and identities, generates hide-my-email aliases, and acts as a 2FA authenticator, all inside one encrypted vault. You enter your master password once, and the extension autofills logins, payment forms, and personal details across sites while keeping everything end-to-end encrypted. This article explains each of those features, how they work, what they cost, and how the service compares with standalone tools.

Formula

The number of possible passwords is character set size raised to the power of password length: combinations = c^l. The character set size is how many different symbols you allow: 26 lowercase letters, 52 if you add uppercase, 62 with digits, and 94 if you include special characters. The time to crack is simply the combinations divided by the guessing rate: time = combinations / guesses_per_second. This gives a best-case estimate for an offline attack where the attacker has the hashed password file and tries every combination in order.

Worked Example

Using the default values: a 12-character password drawn from a 94-character set, with an attacker able to try 1 trillion (1e12) guesses per second.

1. Combinations = 94^12 = 475,920,314,814,253,376,475,136 (about 4.76 × 10^23).
2. Time in seconds = 4.76 × 10^23 / 1e12 = 4.76 × 10^11 seconds.
3. Convert to years: 4.76 × 10^11 / (60 × 60 × 24 × 365) ≈ 15,090 years.

The calculator shows 15,090 years for the default inputs. That is why a 12-character password with mixed symbols is considered strong against offline brute force today.

What Proton Pass Actually Stores

Beyond passwords, Proton Pass has dedicated item types for:

• Credit cards – card number, holder name, expiry, CVC, and billing address. Autofill works on checkout forms.
• Identities – personal details like name, email, phone, and shipping address, which can be filled into forms.
• Notes – free-form encrypted text, useful for Wi-Fi passwords, locker combos, or recovery codes.
• Email aliases – with a paid plan you can create randomword@proton.me aliases that forward to your real inbox. If a site spams you, you just delete the alias.
• 2FA codes – the app can generate time-based one-time passwords (TOTP) for sites that support two-factor authentication, so you do not need a separate authenticator app.

All of these are encrypted with your master password before they leave your device. Proton’s servers only store ciphertext, so even Proton cannot read your vault.

How the Encryption Works

Proton Pass uses the same end-to-end encryption model as Proton Mail. Your master password is run through a key-derivation function (Argon2) to produce an encryption key. That key encrypts your vault locally, and only the encrypted blob is synced to Proton’s servers. When you log in on a new device, you enter your master password again, the key is re-derived, and your vault decrypts locally. Proton never sees the key, and there is no backdoor. If you forget the master password, there is no recovery – the data is unrecoverable by design. That is a trade-off for security.

Hide-My-Email Aliases

One of the most useful non-password features is alias generation. Instead of giving a site your real email, you create a unique alias like shopping-7xk9@proton.me. Emails sent to that alias are forwarded to your actual inbox. If the alias starts receiving spam, you disable it in Proton Pass and the sender gets a bounce. This protects your real address from data breaches and marketing lists. On the free plan you get a limited number of aliases; paid plans include unlimited aliases. The feature works with any email provider, since forwarding happens at Proton’s servers.

Built-in 2FA Authenticator

Proton Pass can replace Google Authenticator or Authy for many sites. When a service gives you a QR code for two-factor authentication, you scan it with Proton Pass and it stores the secret. The app then generates the 6-digit code that changes every 30 seconds. Having 2FA in the same app as your passwords is convenient, but it also means that if someone gets your master password and your device, they have both factors. For high-value accounts (email, banking), a separate authenticator app or hardware key is still safer. Proton Pass also supports importing existing 2FA secrets from other apps, though the process varies by platform.

Free vs Paid Plans

Proton Pass has a free tier and a paid tier (Proton Pass Plus, or included in Proton Unlimited). The free version includes unlimited passwords, unlimited notes, and a limited number of email aliases and 2FA codes. The paid version adds unlimited aliases, unlimited 2FA, and support for multiple vaults (e.g., separate work and personal vaults). There is also a family plan that shares vaults among up to six people. You can use Proton Pass without a Proton Mail account – any email works – but having a Proton account makes the integration smoother.

Common Mistakes and Limits

The biggest mistake people make is reusing the same password across sites. Proton Pass’s password generator can create unique random passwords, but you have to use it. Another issue is relying on the built-in 2FA for everything – if you lose your phone and your master password, you lose access. Also, the alias feature only works for receiving email; you cannot send email from an alias unless you set up a separate Proton Mail identity. Finally, the browser extension works on Chrome, Firefox, Edge, and Safari, plus mobile apps for iOS and Android, but it does not have a desktop app like some competitors. The password manager is solid, but it is still younger than 1Password or Bitwarden, so some advanced features like password sharing with granular permissions are still evolving.

Frequently Asked Questions

Can I use Proton Pass without a Proton Mail account?

Yes. You can sign up for Proton Pass with any email address. You do not need a Proton Mail mailbox. However, if you want to use the hide-my-email aliases, those alias addresses end in @proton.me or @protonmail.com, and you will need a Proton account to manage them.

Is Proton Pass really encrypted end-to-end?

Yes. Your vault is encrypted on your device with a key derived from your master password. Proton’s servers store only the encrypted data, and the company has published its encryption model. They cannot read your passwords, notes, or 2FA secrets.

What happens if I forget my master password?

There is no recovery. Proton Pass does not store your master password or a reset key. If you forget it, your vault is permanently inaccessible. You can export your data before that happens, but you must remember the password to export. This is standard for zero-knowledge services.

Can I import my passwords from another manager?

Yes. Proton Pass supports importing from CSV files, and it has direct import options from Bitwarden, LastPass, Chrome, and other browsers. The import process is available in the web app and the browser extension.

Does Proton Pass work offline?

Yes, once your vault is synced to your device, you can view and autofill passwords without an internet connection. Changes you make offline will sync when you reconnect. However, creating new email aliases requires an internet connection because they are generated on Proton’s servers.

Is Proton Pass safe to use for banking?

It is as safe as any reputable password manager, but for banking you should enable two-factor authentication on your bank account and consider using a separate authenticator app or hardware key for that one account. That way a compromise of your password manager does not give access to your bank.

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in t | Time to crack (years) | years | 1 | 0
in l | Password length | characters | 12 | 1 | 128
in c | Character set size | - | 94 | 1 | 200
out combos | Possible combinations | - | c^l | 0
out rate | Guesses per second | - | 1e12 | 0
out time | Time to crack (seconds) | s | combos / rate | 0